build: run docs regen in synth.py (#1059)

diff --git a/docs/dyn/compute_beta.regionTargetHttpProxies.html b/docs/dyn/compute_beta.regionTargetHttpProxies.html
index 1b93492..7791590 100644
--- a/docs/dyn/compute_beta.regionTargetHttpProxies.html
+++ b/docs/dyn/compute_beta.regionTargetHttpProxies.html
@@ -211,7 +211,11 @@
     "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
     "kind": "compute#targetHttpProxy", # [Output Only] Type of resource. Always compute#targetHttpProxy for target HTTP proxies.
     "name": "A String", # Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
-    "proxyBind": True or False, # This field only applies when the loadBalancingScheme is INTERNAL_SELF_MANAGED. When set to true the Envoy binds on the IP address specified by the forwarding rule. Default is false.
+    "proxyBind": True or False, # This field only applies when the forwarding rule that references this target proxy has a loadBalancingScheme set to INTERNAL_SELF_MANAGED.
+        #
+        # When this field is set to true, Envoy proxies set up inbound traffic interception and bind to the IP address and port specified in the forwarding rule. This is generally useful when using Traffic Director to configure Envoy as a gateway or middle proxy (in other words, not a sidecar proxy). The Envoy proxy listens for inbound requests and handles requests when it receives them.
+        #
+        # The default is false.
     "region": "A String", # [Output Only] URL of the region where the regional Target HTTP Proxy resides. This field is not applicable to global Target HTTP Proxies.
     "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
     "urlMap": "A String", # URL to the UrlMap resource that defines the mapping from URL to the BackendService.
@@ -249,7 +253,11 @@
   "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
   "kind": "compute#targetHttpProxy", # [Output Only] Type of resource. Always compute#targetHttpProxy for target HTTP proxies.
   "name": "A String", # Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
-  "proxyBind": True or False, # This field only applies when the loadBalancingScheme is INTERNAL_SELF_MANAGED. When set to true the Envoy binds on the IP address specified by the forwarding rule. Default is false.
+  "proxyBind": True or False, # This field only applies when the forwarding rule that references this target proxy has a loadBalancingScheme set to INTERNAL_SELF_MANAGED.
+      # 
+      # When this field is set to true, Envoy proxies set up inbound traffic interception and bind to the IP address and port specified in the forwarding rule. This is generally useful when using Traffic Director to configure Envoy as a gateway or middle proxy (in other words, not a sidecar proxy). The Envoy proxy listens for inbound requests and handles requests when it receives them.
+      # 
+      # The default is false.
   "region": "A String", # [Output Only] URL of the region where the regional Target HTTP Proxy resides. This field is not applicable to global Target HTTP Proxies.
   "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
   "urlMap": "A String", # URL to the UrlMap resource that defines the mapping from URL to the BackendService.
@@ -374,7 +382,11 @@
         "id": "A String", # [Output Only] The unique identifier for the resource. This identifier is defined by the server.
         "kind": "compute#targetHttpProxy", # [Output Only] Type of resource. Always compute#targetHttpProxy for target HTTP proxies.
         "name": "A String", # Name of the resource. Provided by the client when the resource is created. The name must be 1-63 characters long, and comply with RFC1035. Specifically, the name must be 1-63 characters long and match the regular expression `[a-z]([-a-z0-9]*[a-z0-9])?` which means the first character must be a lowercase letter, and all following characters must be a dash, lowercase letter, or digit, except the last character, which cannot be a dash.
-        "proxyBind": True or False, # This field only applies when the loadBalancingScheme is INTERNAL_SELF_MANAGED. When set to true the Envoy binds on the IP address specified by the forwarding rule. Default is false.
+        "proxyBind": True or False, # This field only applies when the forwarding rule that references this target proxy has a loadBalancingScheme set to INTERNAL_SELF_MANAGED.
+            #
+            # When this field is set to true, Envoy proxies set up inbound traffic interception and bind to the IP address and port specified in the forwarding rule. This is generally useful when using Traffic Director to configure Envoy as a gateway or middle proxy (in other words, not a sidecar proxy). The Envoy proxy listens for inbound requests and handles requests when it receives them.
+            #
+            # The default is false.
         "region": "A String", # [Output Only] URL of the region where the regional Target HTTP Proxy resides. This field is not applicable to global Target HTTP Proxies.
         "selfLink": "A String", # [Output Only] Server-defined URL for the resource.
         "urlMap": "A String", # URL to the UrlMap resource that defines the mapping from URL to the BackendService.