PARQUET-21: Fix reference to 'github-apache' in dev docs

Author: Tom White <[email protected]>

Closes apache#20 from tomwhite/git-remote-name-fix and squashes the following commits:

c7f8a18 [Tom White] Change 'github-apache' to 'apache-github' in docs to match script.

Author: tomwhite

dev/README.md

@@ -2,12 +2,12 @@
 This directory contains scripts useful to developers when packaging,
 testing, or committing to Parquet.
 
-Merging a pull request requires being a comitter on the project.
+Merging a pull request requires being a committer on the project.
 
 * How to merge a Pull request:
-have an apache and github-apache remote setup
+have an apache and apache-github remote setup
 ```
-git remote add github-apache [email protected]:apache/incubator-parquet-mr.git
+git remote add apache-github [email protected]:apache/incubator-parquet-mr.git
 git remote add apache https://git-wip-us.apache.org/repos/asf/incubator-parquet-mr.git
 ```
 run the following command