fix: update aria-roledescription gutter (#5718)

Co-authored-by: Alice Koreman <[email protected]>

Author: akoreman

src/editor.js

@@ -2987,7 +2987,7 @@ config.defineOptions(Editor.prototype, "editor", {
                 this.renderer.$gutter.setAttribute("tabindex", 0);
                 this.renderer.$gutter.setAttribute("aria-hidden", false);
                 this.renderer.$gutter.setAttribute("role", "group");
-                this.renderer.$gutter.setAttribute("aria-roledescription", nls("editor.gutter.aria-roledescription", "editor"));
+                this.renderer.$gutter.setAttribute("aria-roledescription", nls("editor.gutter.aria-roledescription", "editor gutter"));
                 this.renderer.$gutter.setAttribute("aria-label",
                     nls("editor.gutter.aria-label", "Editor gutter, press Enter to interact with controls using arrow keys, press Escape to exit")
                 );

src/lib/default_english_messages.js

@@ -5,7 +5,7 @@ var defaultEnglishMessages = {
     "autocomplete.loading": "Loading...",
     "editor.scroller.aria-roledescription": "editor",
     "editor.scroller.aria-label": "Editor content, press Enter to start editing, press Escape to exit",
-    "editor.gutter.aria-roledescription": "editor",
+    "editor.gutter.aria-roledescription": "editor gutter",
     "editor.gutter.aria-label": "Editor gutter, press Enter to interact with controls using arrow keys, press Escape to exit",
     "error-marker.good-state": "Looks good!",
     "prompt.recently-used": "Recently used",