Merge pull request #4004 from davydovanton/doc-fix-typos

Fix typos in #render_in_context documentation

lib/active_admin/view_helpers/method_or_proc_helper.rb

@@ -76,8 +76,8 @@ def render_or_call_method_or_proc_on(obj, string_symbol_or_proc, options = {})
     end
   end
 
-  # This method is different from the others in that it calls `instance_exec` on the reciever,
-  # passing it the proc. This evaluates the proc in the context of the reciever, thus changing
+  # This method is different from the others in that it calls `instance_exec` on the receiver,
+  # passing it the proc. This evaluates the proc in the context of the receiver, thus changing
   # what `self` means inside the proc.
   def render_in_context(context, obj, *args)
     context = self if context.nil? # default to `self` only when nil