[Docs] invoke: Add missing backticks to end of codeblock

The example for invoke is missing a closing set of backticks for the example which is leading to it not rendering correctly on the docs site (https://airbnb.io/enzyme/docs/api/ShallowWrapper/invoke.html). This commit updates the code example in . `invoke.md` to include the missing backticks.
enzymejs · Jun 10, 2019 · dbb5aae · dbb5aae
1 parent 962e317
commit dbb5aae
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/docs/api/ShallowWrapper/invoke.md b/docs/api/ShallowWrapper/invoke.md
@@ -38,3 +38,4 @@ const wrapper = shallow(<Foo />);
 wrapper.find('a').invoke('onClick')().then(() => {
   // expect()
 });
+```