refactor(contributing.md): made all code-commands into shell snippets (#478)

Author: TheMcnafaha

CONTRIBUTING.md

@@ -36,15 +36,17 @@ Discussing the design up front helps to ensure that we're ready to accept your w
 
 ### ▶ 3. Fork this repo and create a branch.
 
-- Hit that "Fork" button above (in this repo's github page).
+- Hit that "Fork" button above (in this repo's GitHub page).
 
 ![image](https://user-images.githubusercontent.com/1430726/95460679-ec014400-097d-11eb-9a7a-93e0262d37d9.png)
 
 - git clone your fork
 
-`git clone YOUR_FORK_URL`
+```shell
+git clone YOUR_FORK_URL
+```
 
-Get your url by from here 👇
+Get your URL by from here 👇
 
 ![image](https://user-images.githubusercontent.com/1430726/95461173-94afa380-097e-11eb-9568-dc986e050de6.png)
 
@@ -58,17 +60,29 @@ git checkout -b my-fix-branch main
 
 ### ▶ 4. Run the library
 
-- From the root of the project run `pnpm install`.
+- From the root of the project run the following command:
+
+```shell
+pnpm install
+```
+
+- Then run this command:
 
-- Then run `npx nx@latest serve website`.
+```shell
+npx nx@latest serve website
+```
 
 - Visit the URL printed in the console and you'll have a page opened with the suite of widgets.
 
 - Once you made some changes in either package (`headless`, `tailwind` or `material`), you will see them immediately reflected on the page.
 
 ### ▶ 5. Make sure you add / modify tests
 
-Run `pnpm run test` to make sure there aren't any errors
+Run the following command to make sure there aren't any errors:
+
+```shell
+pnpm run test
+```
 
 <br/>
 
@@ -88,7 +102,6 @@ This will create a descriptive commit message that follows the
 This is necessary to generate meaningful release notes / CHANGELOG automatically.
 
 <br/>
-
 ### ▶ 7. Push your branch to GitHub:
 
 ```shell
@@ -107,7 +120,11 @@ If you need to update your PR for some reason -
 
 - Make the required updates.
 
-- Re-run the tests to ensure tests are still passing `pnpm run test`
+- Re-run the tests to ensure tests are still passing:
+
+```shell
+pnpm run test
+```
 
 - Rebase your branch and force push to your GitHub repository (this will update your Pull Request):
 

cla-signs/v1/cla.json

@@ -377,4 +377,4 @@
       "pullRequestNo": 478
     }
   ]
-}
+}