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

diff --git a/docs/dyn/youtube_v3.tests.html b/docs/dyn/youtube_v3.tests.html
index c85f2bf..79b0181 100644
--- a/docs/dyn/youtube_v3.tests.html
+++ b/docs/dyn/youtube_v3.tests.html
@@ -96,10 +96,10 @@
     The object takes the form of:
 
 {
-    "gaia": "A String",
     "id": "A String",
     "snippet": {
     },
+    "gaia": "A String",
   }
 
   x__xgafv: string, V1 error format.
@@ -111,10 +111,10 @@
   An object of the form:
 
     {
-      "gaia": "A String",
       "id": "A String",
       "snippet": {
       },
+      "gaia": "A String",
     }</pre>
 </div>