chore(*): add lerna.json to .prettierignore (#248)

This pull request includes a small change to the `.prettierignore` file.
The change adds `lerna.json` to the list of ignored files.

Change in `.prettierignore`:

* Added `lerna.json` to the list of ignored files.

Author: lumirlumir

.prettierignore

@@ -15,6 +15,7 @@ build
 coverage
 
 # package
+lerna.json
 package-lock.json
 
 # markdown