chore: Remove unnecessary double space in example API

Google APIs · copybara-github · commit 885183fcec1a · 2021-09-13T10:10:03.000-07:00
PiperOrigin-RevId: 396382685
diff --git a/google/example/library/v1/library.proto b/google/example/library/v1/library.proto
@@ -30,7 +30,7 @@ option java_outer_classname = "LibraryProto";
 option java_package = "com.google.example.library.v1";
 option php_namespace = "Google\\Cloud\\Example\\Library\\V1";
 
-// This API represents a simple digital library.  It lets you manage Shelf
+// This API represents a simple digital library. It lets you manage Shelf
 // resources and Book resources in the library. It defines the following
 // resource model:
 //
