Update script filename in comments.

install.bat

@@ -1,6 +1,6 @@
 @echo off
 REM
-REM gameplay-install.bat [master | next]
+REM install.bat [master | next]
 REM
 REM Download GamePlay resources from HTTP server and extract from ZIP
 REM

install.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 #
-# ./gameplay-install.sh [master | next]
+# ./install.sh [master | next]
 #
 # Download GamePlay resources from HTTP server and extract from ZIP
 #