Add blank line between legal header and package declaration

Otherwise, the legal header is rendered as package documentation.

internal/server/user/mux/gorillize.go

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package mux
 
 import (

internal/server/user/mux/gorillize_test.go

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package mux
 
 import (

internal/server/user/mux/handlerbuilder.go

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package mux
 
 import (

internal/server/user/mux/handlerbuilder_test.go

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package mux
 
 import (

internal/server/user/mux/mux.go

@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package mux
 
 import (

internal/server/user/mux/mux_test.go

@@ -15,6 +15,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 package mux
 
 import (