chore: enable the google dictionary when checking google api (#6798)

Author: Jason3S

integration-tests/config/repositories/googleapis/google-cloud-cpp/cspell.config.yaml

@@ -7,6 +7,7 @@ dictionaryDefinitions:
 
 dictionaries:
   - google-custom-words
+  - google
 
 ignorePaths:
   - '**/{*.BUILD,BUILD,CHANGELOG.md,*.sh,*.cfg,*.ps1,Dockerfile.*,*.Dockerfile,*.{yaml,xml,json,cmake}}'