NSIS script: fix comment

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@47953 15284696-431f-4ddb-bdfa-cd5b030d7da7

mswindows/GRASS-Installer.nsi

@@ -1010,7 +1010,7 @@ Section "Uninstall"
 	SetShellVarContext all
 	RMDir /r "$SMPROGRAMS\${GRASS_BASE}"
 	
-	;remove the $APPDATA\grass7\rc file
+	;remove the $APPDATA\grass7 folder
 	SetShellVarContext current
 	RMDir /r "$APPDATA\grass7"