Update repository URL

Author: Gert-dev

package.json

@@ -3,7 +3,7 @@
   "main": "./lib/Main",
   "version": "1.3.0",
   "description": "Lints your PHP source code to indicate various problems such as missing methods.",
-  "repository": "https://github.com/php-integrator/atom-linter.git",
+  "repository": "https://github.com/php-integrator/atom-linter-legacy-php56.git",
   "license": "GPL-3.0",
   "engines": {
     "atom": ">=1.8.0 <2.0.0"