more readme cleanup

README.md

@@ -9,14 +9,14 @@ Script will ask for the size, in Gigabytes, of the new files. And it will ask fo
 
 ## Installation
 
-### Python3
+### Python3:
 If you do not have python3 installed, I recommend downloading it with [Homebrew](https://brew.sh/). There is an install command on their website. After Homebrew has been installed, install python like this:
 
 ```bash
 brew install python3
 ```
 
-### Scripts
+### Scripts:
 Download cmg-commands directory either by checking it out with git or downloading using the download link (under the 'three dots' above.) 
 
 Then, cd into the directory and run the following command: