fix(angular.json): missing css path

Author: xidedix

angular.json

@@ -72,7 +72,7 @@
             "tsConfig": "src/tsconfig.spec.json",
             "karmaConfig": "src/karma.conf.js",
             "styles": [
-              "styles.css"
+              "src/styles.css"
             ],
             "scripts": [],
             "assets": [