quick fix for style and standard, do not repeat term

[barriebyron]

As I work on a new Starport glossary, I came over here to admire the Cosmos Cash glossary.

Let's make these changes to begin the path to glossary excellence:

• do not repeat the glossary term in the description
• apply technical content style standards

remain awesome!

[barriebyron]

this little PR can just wait until 2022, merry holidays!