Fix a small parsing problem with arguments of type rs_matrix2x2, 3x3, 4x4.

Also fix some style issues and added a missing comment.

Change-Id: Ieaca181453f38f948bc2a5e3d183b264d7215413
diff --git a/api/GenerateTestFiles.cpp b/api/GenerateTestFiles.cpp
index 529bd2a..11bd913 100644
--- a/api/GenerateTestFiles.cpp
+++ b/api/GenerateTestFiles.cpp
@@ -1028,7 +1028,7 @@
     return true;
 }
 
-bool GenerateTestFiles(const string& directory, int versionOfTestFiles) {
+bool generateTestFiles(const string& directory, int versionOfTestFiles) {
     bool success = true;
     for (auto f : systemSpecification.getFunctions()) {
         if (!writeTestFilesForFunction(*f.second, directory, versionOfTestFiles)) {