Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/dyn/cloudtrace_v1.projects.html b/docs/dyn/cloudtrace_v1.projects.html
index 5b685d1..7b3eee0 100644
--- a/docs/dyn/cloudtrace_v1.projects.html
+++ b/docs/dyn/cloudtrace_v1.projects.html
@@ -103,7 +103,8 @@
           # timed event within the operation.
         "projectId": "A String", # Project ID of the Cloud project where the trace data is stored.
         "traceId": "A String", # Globally unique identifier for the trace. This identifier is a 128-bit
-            # numeric value formatted as a 32-byte hex string.
+            # numeric value formatted as a 32-byte hex string. For example,
+            # `382d4f4c6b7bb2f4a972559d9085001d`.
         "spans": [ # Collection of spans in the trace.
           { # A span represents a single timed event within a trace. Spans can be nested
               # and form a trace tree. Often, a trace contains a root span that describes the
@@ -115,7 +116,7 @@
                 # and `RPC_SERVER` to identify queueing latency associated with the span.
             "name": "A String", # Name of the span. Must be less than 128 bytes. The span name is sanitized
                 # and displayed in the Stackdriver Trace tool in the
-                # {% dynamic print site_values.console_name %}.
+                # Google Cloud Platform Console.
                 # The name may be a method name or some other per-call site name.
                 # For the same executable and the same call point, a best practice is
                 # to use a consistent name, which makes it easier to correlate
@@ -144,9 +145,11 @@
                 # *   `/http/client_region`
                 # *   `/http/host`
                 # *   `/http/method`
+                # *   `/http/path`
                 # *   `/http/redirected_url`
                 # *   `/http/request/size`
                 # *   `/http/response/size`
+                # *   `/http/route`
                 # *   `/http/status_code`
                 # *   `/http/url`
                 # *   `/http/user_agent`
@@ -158,7 +161,7 @@
             "parentSpanId": "A String", # ID of the parent span, if any. Optional.
             "startTime": "A String", # Start time of the span in nanoseconds from the UNIX epoch.
             "spanId": "A String", # Identifier for the span. Must be a 64-bit integer other than 0 and
-                # unique within a trace.
+                # unique within a trace. For example, `2205310701640571284`.
             "endTime": "A String", # End time of the span in nanoseconds from the UNIX epoch.
           },
         ],