Quick markdown cleanups

CONTRIBUTING.md

@@ -26,8 +26,10 @@ New to Git?
 -----------
 
 - [Git Basics](docs/git/basics.md): install and getting started.
-- [Git for sd users](docs/git/source-depot.md): a handy reference document for people familiar with `sd`.
-- [Commit process](docs/git/committing.md): step-by-step commit guide with all gory details.
+- [Git for sd users](docs/git/source-depot.md): a handy reference
+  document for people familiar with `sd`.
+- [Commit process](docs/git/committing.md): step-by-step commit guide
+  with all gory details.
 
 Authentication
 --------------
@@ -61,7 +63,7 @@ Particularly:
 [2 factor authentication]: https://github.com/blog/1614-two-factor-authentication
 
 [Branches](docs/workflow/branches.md)
---------
+-------------------------------------
 
 * Checkout a new local branch for every change you want to make (bugfix, feature).
 * Use `alias/feature-name` pattern.
@@ -116,12 +118,12 @@ git config --global am.threeWay true
 ```
 
 [Mapping](docs/workflow/mapping.md)
---------
+-----------------------------------
 
 Learn about new files locations in PowerShell/PowerShell.
 
 [Resources](docs/workflow/resources.md)
---------
+---------------------------------------
 
 Learn how to work with string resources in `.resx` files.
 

docs/git/basics.md

@@ -1,10 +1,11 @@
 # Git 101
 
-We are using git version 2.7.x, but any version should be good.
-It's recommended to learn `git` command line tool for full cross-platform expirience.
+We are using Git version 2.8.1, but any recent version should be good.
+It's recommended to learn the `git` command line tool for full
+cross-platform experience and a deeper understanding of Git itself.
 
-There are (too) many git tutorials on the internet.
-Here we post referrences to our favorites.
+There are (too) many Git tutorials on the internet. Here we post
+references to our favorites.
 
 ## Install
 

docs/git/committing.md

@@ -39,10 +39,11 @@ index 1ba8dd4..ed5d202 160000
 * Push the branch (in the SuperProject): `git push origin jim/colon-drive`
 * Pull request in the superproject to kick-in CI build and notify people. Reference submodule pull-request in the PR message to make navigation between two simpler.
 
-### Commands log
+Commands log
+------------
 
 Here is a transcript of command Jim used:
-```
+```sh
 cd $HOME/PowerShell/src/monad/monad/src/engine
 vi DataStoreAdapter.cs
 git checkout -b jim/colon-drive
@@ -50,11 +51,10 @@ git commit -a
 git push origin jim/colon-drive
 ```
 then I went to the web interface and did the pull request *in the submodule*. After that, back to the commandline:
-```
+```sh
 cd $HOME/PowerShell
 git checkout -b jim/colon-drive
 git commit -a
 git push origin jim/colon-drive
 ```
 and back to the web interface for the pull request *in the superproject*.
-