NEWS: add a space

* NEWS: fix wording, "Active Support" has a space in between the
  words, not ActiveSupport.
  https://github.com/ruby/ruby/commit/a356fe1#commitcomment-13936198

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52232 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

NEWS

@@ -22,7 +22,7 @@ with all sufficient information, see the ChangeLog file.
 
   * new method call syntax, `object.?foo', method #foo is called on
     `object' if it is not nil.
-    this is similar to `try!' in ActiveSupport, except for:
+    this is similar to `try!' in Active Support, except for:
     * method name is syntactically required
           obj.try! {} # valid
           obj.? {}    # syntax error