Properly use ui bdd rather than tdd

Not sure why this ever worked...

Author: Levertion

mocha.opts

@@ -1,4 +1,4 @@
---ui tdd
+--ui bdd
 --colors
 --timeout 999999
 --require ts-mocha

src/test/actions.test.ts

@@ -23,6 +23,7 @@ const manager = DataManager.newWithData({
     ...emptyGlobal,
     commands: tree
 });
+
 describe("signatureHelpProvider()", () => {
     it("should give results for every command when no text is specified", () => {
         const result = unwrap(