Use docs.ruby-lang.org search directly

The latest version of RDoc has a built-in javascript powered search,
similar to what !rails does, and Ruby just upgraded to it. This should
delivery better results than the google search.
ruby/rdoc#1396

https://docs.ruby-lang.org/en/master/?q=String#gsub

Author: jhawthorn

data/bangs.json

@@ -65825,13 +65825,12 @@
   },
   {
     "s": "Current ruby docs",
-    "d": "www.google.com",
-    "ad": "docs.ruby-lang.org",
+    "d": "docs.ruby-lang.org",
     "t": "rb",
     "ts": [
       "ruby"
     ],
-    "u": "https://www.google.com/cse?q={{{s}}}&cx=013598269713424429640:g5orptiw95w&ie=UTF-8",
+    "u": "https://docs.ruby-lang.org/en/master/?q={{{s}}}",
     "c": "Tech",
     "sc": "Programming"
   },