doc: update contributing

CONTRIBUTING.md

@@ -1,22 +1,27 @@
-# Contributing to the google_place package.
-Thank you for your interest in contributing to the ***google_place*** package! I love receiving contributions, and your work helps quality of this package. This doc will walk you through the easiest way to make a change and have it submitted to the ***google_place*** package.
+# Contributing to the google_place package
+
+Thank you for your interest in contributing to the **_google_place_** package! I love receiving contributions, and your work helps quality of this package. This doc will walk you through the easiest way to make a change and have it submitted to the **_google_place_** package.
 
 ## Developer workflow
+
 The easiest workflow for adding a feature/fixing a bug is to test it out on the example app in this repo.
 
 ### Environment
-1. Fork the ***google_place*** repo on github.
-2. Clone your fork of the ***google_place*** repo.
-3. Build and run the example app in example/lib/main.dart (from the example/ directory, use $ flutter run).
+
+1. Fork the **_google_place_** repo on github.
+2. Clone your fork of the **_google_place_** repo.
+3. Build and run the example app in example/lib/main.dart (from the example/ directory, use \$ flutter run).
 
 ### Development
-1. Make the changes to your local copy of the ***google_place*** package, testing the changes in the example app.
+
+1. Make the changes to your local copy of the **_google_place_** package, testing the changes in the example app.
 2. Write a unit test for your change, if possible, in one of the files in test/.
 3. Update the CHANGELOG.md with a new version number, and a description of the change you're making.
 4. Update the version: in the pubspec.yaml file to your new version.
 
 ### Review
-1. Make sure all the existing tests are passing by using the following command (from the root of the project): $ flutter test test/.
-2. Make sure the repo is formatted using $ flutter format ..
-3. Create a PR to merge the branch on your fork into ***google_place/master***.
+
+1. Make sure all the existing tests are passing by using the following command (from the root of the project): \$ flutter test test/.
+2. Make sure the repo is formatted using \$ flutter format ..
+3. Create a PR to merge the branch on your fork into **_google_place/master_**.
 4. Add bazrafkan as reviewers on the PR. I will take a look and add any comments. When the PR is ready to be merged, I will merge it and update the package on pub.dev!