chore: Fix lint issues

Author: lqiu96

oauth2_http/java/com/google/auth/oauth2/GoogleCredentials.java

@@ -514,13 +514,13 @@ public String getQuotaProjectId() {
     return this.quotaProjectId;
   }
 
-    /**
-     * The projectId value for a Credential type. Since not all GoogleCredentials subclass have a
-     * projectId associated, the projectId may be null. A subset of GoogleCredentials subclasses
-     * will override to return their projectId.
-     *
-     * @return the project id for a Credential type
-     */
+  /**
+   * The projectId value for a Credential type. Since not all GoogleCredentials subclass have a
+   * projectId associated, the projectId may be null. A subset of GoogleCredentials subclasses will
+   * override to return their projectId.
+   *
+   * @return the project id for a Credential type
+   */
   public String getProjectId() {
     return null;
   }