Ruby: fix qldoc for getMethod

Author: asgerf

ruby/ql/lib/codeql/ruby/ApiGraphs.qll

@@ -103,7 +103,7 @@ module API {
     Node getInstance() { result = this.getASubclass().getReturn("new") }
 
     /**
-     * Gets a node representing the result of calling a method on the receiver represented by this node.
+     * Gets a node representing a call to `method` on the receiver represented by this node.
      */
     Node getMethod(string method) {
       result = this.getASubclass().getASuccessor(Label::method(method))