Remove a trailing space in proto file

As per comment on ag/33810852. Accidentally merged the change
before publishing the edit.

Test: TH
Flag: EXEMPT statsd atoms/metrics changes

Change-Id: I5bcf0dd7a0688cbc4812299358e19bbbf7131979
diff --git a/stats/atoms/privatespace/privatespace_extension_atoms.proto b/stats/atoms/privatespace/privatespace_extension_atoms.proto
index dc63757..efb3a48 100644
--- a/stats/atoms/privatespace/privatespace_extension_atoms.proto
+++ b/stats/atoms/privatespace/privatespace_extension_atoms.proto
@@ -32,7 +32,7 @@
       [(module) = "privatespace"];
 }
 
-// Atom for PrivateSpace app shortcut clicks. 
+// Atom for PrivateSpace app shortcut clicks.
 // Logged from packages/apps/PrivateSpace/src/com/android/privatespace/PrivateSpaceActivity.kt
 message PrivateSpaceAddButtonEvent {
   // User clicked on the PrivateSpace app shortcut displayed after click on add