chore: fix typo in comment (#124)

Author: G-Rath

example-app/eslint-breaking-examples/break-jest-formatting-rules.test.tsx

@@ -1,6 +1,6 @@
 // Save without formatting: [⌘ + K] > [S]
 
-// This should trigger an error breaking eslint-pluging-jest rule:
+// This should trigger an error breaking eslint-plugin-jest rule:
 // jest/padding-around-all
 
 it("a test", () => {