Rename Tool Collection to Tool Collections

Author: stefanjudis

helpers/10015-tools.json

@@ -3,7 +3,7 @@
   "desc": "10015 Tools is an all-in-one toolbox offering web tools from different categories including text, image, CSS, code, color, social media tools and so on.",
   "url": "https://10015.io",
   "tags": [
-    "Tool Collection"
+    "Tool Collections"
   ],
   "maintainers": [
     "fatihtelis"