* Fixing Typo that was mentioned in #3764
* Cleaning up some other things in glossary
As I was making the other commit (#3766) I noticed some other things in the glossary that could be changed.
One of the main things is that each example read differently so there was a lot of jumping between how examples were written, I've made them a bit more unified.
I also added a bit more explanatory text and added some links as suggested in #3764.
I made this a seperate pull because I figured it might be a bit more opinionated than the typo error.
* Missed discovery.
* Add quotes
* Update glossary.yml
Added automation, trigger, and template. Adjusted the groups entry to not utilize the term in the definition.
* Remove white space
