Regen all docs. (#700)

* Stop recursing if discovery == {}

* Generate docs with 'make docs'.
diff --git a/docs/dyn/webmasters_v3.sites.html b/docs/dyn/webmasters_v3.sites.html
index 226ebb0..481d566 100644
--- a/docs/dyn/webmasters_v3.sites.html
+++ b/docs/dyn/webmasters_v3.sites.html
@@ -101,7 +101,7 @@
   <pre>Removes a site from the set of the user's Search Console sites.
 
 Args:
-  siteUrl: string, The URI of the property as defined in Search Console. Examples: http://www.example.com/ or android-app://com.example/ (required)
+  siteUrl: string, The URI of the property as defined in Search Console. Examples: http://www.example.com/ or android-app://com.example/ Note: for property-sets, use the URI that starts with sc-set: which is used in Search Console URLs. (required)
 </pre>
 </div>
 
@@ -110,7 +110,7 @@
   <pre>Retrieves information about specific site.
 
 Args:
-  siteUrl: string, The URI of the property as defined in Search Console. Examples: http://www.example.com/ or android-app://com.example/ (required)
+  siteUrl: string, The URI of the property as defined in Search Console. Examples: http://www.example.com/ or android-app://com.example/ Note: for property-sets, use the URI that starts with sc-set: which is used in Search Console URLs. (required)
 
 Returns:
   An object of the form: