Fix broken ToC link in README

Author: NicMcPhee

Diff for: README.md

@@ -1,5 +1,5 @@
 * [Background](#background)
- * [Testing and the CMockery framework](#testing-and-the-cmockery-framework)
+ * [Testing and the Google Test framework](#testing-and-the-google-test-framework)
  * [Fixing memory problems](#fixing-memory-problems)
  * [Getting started](#getting-started)
 * [The problems](#the-problems)
@@ -18,7 +18,7 @@ the second is a simple exercise on 1-D arrays of characters
 For more information (including information on how to use ```valgrind```), see
 the [Lab3 pre-lab](https://github.com/UMM-CSci-Systems/C-programming-pre-lab).
 
-## Testing and the Google Test (aka `gtest`) framework
+## Testing and the Google Test framework
 
 Each of these exercises comes with a set of tests implemented using [the
 Google Test framework for C](https://github.com/google/googletest), aka