Make ?xml tag first line

Author: phrdang

google_checks_mod.xml

@@ -1,12 +1,11 @@
-<!--
-    Copied from https://github.com/checkstyle/checkstyle/blob/33304206fb5b2f10c832cbc2e9d5d373280f6d9d/src/main/resources/google_checks.xml
-    As of: 7/10/20
--->
 <?xml version="1.0"?>
 <!DOCTYPE module PUBLIC
           "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
           "https://checkstyle.org/dtds/configuration_1_3.dtd">
-
+<!--
+    Copied from https://github.com/checkstyle/checkstyle/blob/33304206fb5b2f10c832cbc2e9d5d373280f6d9d/src/main/resources/google_checks.xml
+    As of: 7/10/20
+-->
 <!--
     Checkstyle configuration that checks the Google coding conventions from Google Java Style
     that can be found at https://google.github.io/styleguide/javaguide.html