Make code blocks copy/pastable

RELEASING.md

@@ -12,16 +12,16 @@ Released quarterly on the first day of January, April, July, October.
 * [ ] Update `CHANGES.rst`.
 * [ ] Run pre-release check via `make release-test` in a freshly cloned repo.
 * [ ] Create branch and tag for release e.g.:
-```
-    $ git branch 5.2.x
-    $ git tag 5.2.0
-    $ git push --all
-    $ git push --tags
-```
+  ```bash
+  git branch 5.2.x
+  git tag 5.2.0
+  git push --all
+  git push --tags
+  ```
 * [ ] Create source distributions e.g.:
-```
-    $ make sdist
-```
+  ```bash
+  make sdist
+  ```
 * [ ] Create [binary distributions](https://github.com/python-pillow/Pillow/blob/master/RELEASING.md#binary-distributions)
 * [ ] Upload all binaries and source distributions e.g. `twine upload dist/Pillow-5.2.0*`
 * [ ] Create a [new release on GitHub](https://github.com/python-pillow/Pillow/releases/new)
@@ -34,22 +34,22 @@ Released as needed for security, installation or critical bug fixes.
 * [ ] Make necessary changes in ``master`` branch.
 * [ ] Update `CHANGES.rst`.
 * [ ] Check out release branch e.g.:
-```
-    git checkout -t remotes/origin/5.2.x
-```
+  ```bash
+  git checkout -t remotes/origin/5.2.x
+  ```
 * [ ] Cherry pick individual commits from ``master`` branch to release branch e.g. ``5.2.x``.
 * [ ] Check [Travis CI](https://travis-ci.org/python-pillow/Pillow) to confirm passing tests in release branch e.g. ``5.2.x``.
 * [ ] In compliance with [PEP 440](https://www.python.org/dev/peps/pep-0440/), update version identifier in `src/PIL/_version.py`
 * [ ] Run pre-release check via `make release-test`.
 * [ ] Create tag for release e.g.:
-```
-    $ git tag 5.2.1
-    $ git push --tags
-```
+  ```bash
+  git tag 5.2.1
+  git push --tags
+  ```
 * [ ] Create source distributions e.g.:
-```
-    $ make sdist
-```
+  ```bash
+  make sdist
+  ```
 * [ ] Create [binary distributions](https://github.com/python-pillow/Pillow/blob/master/RELEASING.md#binary-distributions)
 * [ ] Create a [new release on GitHub](https://github.com/python-pillow/Pillow/releases/new)
 
@@ -64,16 +64,16 @@ Released as needed privately to individual vendors for critical security-related
 * [ ] Run pre-release check via `make release-test`
 * [ ] Amend any commits with the CVE #
 * [ ] On release date, tag and push to GitHub.
-```
-    git checkout 2.5.x
-    git tag 2.5.3
-    git push origin 2.5.x
-    git push origin --tags
-```
+  ```bash
+  git checkout 2.5.x
+  git tag 2.5.3
+  git push origin 2.5.x
+  git push origin --tags
+  ```
 * [ ] Create source distributions e.g.:
-```
-    $ make sdist
-```
+  ```bash
+  make sdist
+  ```
 * [ ] Create [binary distributions](https://github.com/python-pillow/Pillow/blob/master/RELEASING.md#binary-distributions)
 * [ ] Create a [new release on GitHub](https://github.com/python-pillow/Pillow/releases/new)
 
@@ -85,18 +85,18 @@ Released as needed privately to individual vendors for critical security-related
 
 ### Mac and Linux
 * [ ] Use the [Pillow Wheel Builder](https://github.com/python-pillow/pillow-wheels):
-```
-    $ git clone https://github.com/python-pillow/pillow-wheels
-    $ cd pillow-wheels
-    $ git submodule init
-    $ git submodule update Pillow
-    $ cd Pillow
-    $ git fetch --all
-    $ git checkout [[release tag]]
-    $ cd ..
-    $ git commit -m "Pillow -> 5.2.0" Pillow
-    $ git push
-```
+  ```bash
+  git clone https://github.com/python-pillow/pillow-wheels
+  cd pillow-wheels
+  git submodule init
+  git submodule update Pillow
+  cd Pillow
+  git fetch --all
+  git checkout [[release tag]]
+  cd ..
+  git commit -m "Pillow -> 5.2.0" Pillow
+  git push
+  ```
 * [ ] Download distributions from the [Pillow Wheel Builder container](http://a365fff413fe338398b6-1c8a9b3114517dc5fe17b7c3f8c63a43.r19.cf2.rackcdn.com/).
   ```bash
   wget -m -A 'Pillow-<VERSION>*' \
@@ -110,4 +110,3 @@ Released as needed privately to individual vendors for critical security-related
 ## Documentation
 
 * [ ] Make sure the default version for Read the Docs is the latest tagged release e.g. ``d2d43879`` (5.4.0)
-