Fixup previous commit

Author: Thomas Kiley

CODING_STANDARD.md

@@ -320,8 +320,8 @@ Homebrew.
 To install on a Unix-like system, try installing using the system package
 manager:
 ```
-apt-get install clang-format-8  # Run this on Ubuntu, Debian etc.
-brew install clang-format@8     # Run this on a Mac with Homebrew installed
+apt-get install clang-format-7  # Run this on Ubuntu, Debian etc.
+brew install clang-format@7     # Run this on a Mac with Homebrew installed
 ```
 
 If your platform doesn't have a package for clang-format, you can download a