Integrate the EXTRACT_METHOD refactoring into Editor.

pkg/analysis_server/doc/api.html

Index: pkg/analysis_server/doc/api.html
diff --git a/pkg/analysis_server/doc/api.html b/pkg/analysis_server/doc/api.html
index 7a29d9037718049b471a941dee5caf147a86a7de..7fda8b05cb7c3b998926ef303d28762a7f046cc6 100644
--- a/pkg/analysis_server/doc/api.html
+++ b/pkg/analysis_server/doc/api.html
@@ -3049,7 +3049,7 @@ dt.typeDefinition {
             </p>
             <ul>
               <li>
-                To change the order and/or update proposed paramerers, add
+                To change the order and/or update proposed parameters, add
                 parameters with the same identifiers as proposed.
               </li>
               <li>To add new parameters, omit their identifier.</li>