chore: typo fixes (#1546)

* chore: fix typos in comments/JSDoc.

* chore: fix typo in internal function name.

* chore: fix typos in test comments/descriptions/variable names.

packages/runtime-dom/__tests__/patchProps.spec.ts

@@ -88,12 +88,12 @@ describe('runtime-dom: props patching', () => {
     // anyway, here we just want to make sure Vue doesn't set non-string props
     // to an empty string on nullish values - it should reset to its default
     // value.
-    const intiialValue = el.srcObject
+    const initialValue = el.srcObject
     const fakeObject = {}
     patchProp(el, 'srcObject', null, fakeObject)
     expect(el.srcObject).not.toBe(fakeObject)
     patchProp(el, 'srcObject', null, null)
-    expect(el.srcObject).toBe(intiialValue)
+    expect(el.srcObject).toBe(initialValue)
   })
 
   test('catch and warn prop set TypeError', () => {