Apply suggestions from code review

Co-authored-by: Koen Vlaswinkel <koesie10@users.noreply.github.com>

Author: starcke

extensions/ql-vscode/src/language-selection-panel/language-selection-data-provider.ts

@@ -13,7 +13,7 @@ import {
 } from "../common/query-language";
 
 const ALL_LANGUAGE_SELECTION_OPTIONS = [
-  undefined, // All langauges
+  undefined, // All languages
   QueryLanguage.Cpp,
   QueryLanguage.CSharp,
   QueryLanguage.Go,
@@ -24,7 +24,7 @@ const ALL_LANGUAGE_SELECTION_OPTIONS = [
   QueryLanguage.Swift,
 ];
 
-// A tree view items consisting of of a language (or undefined for all languages
+// A tree view items consisting of of a language (or undefined for all languages)
 // and a boolean indicating whether it is selected or not.
 export class LanguageSelectionTreeViewItem extends TreeItem {
   constructor(

extensions/ql-vscode/test/vscode-tests/no-workspace/language-selection-panel/language-selection-data-provider.test.ts

@@ -57,7 +57,7 @@ describe("LanguageSelectionTreeDataProvider", () => {
       expectSelected(items, undefined);
     });
 
-    it("When language is changed then the selected element change", async () => {
+    it("When language is changed then the selected element changes", async () => {
       await languageContext.setLanguageContext(QueryLanguage.CSharp);
       const items = dataProvider.getChildren();
       expectSelected(items, QueryLanguage.CSharp);