Use Section Headings for Words for Linking

[nelsonic]

At present most of the terms in the glossary are defined as paragraphs where the word is bold: https://github.com/dwyl/technical-glossary/blob/cc59df6bf2313e8df82ffcd8c93a3765099a54b2/README.md

That means we cannot [directly] link to a word or term from another document. What I've done with the recent addition of the definition of "spike" is create a section heading for the word and then put the definition in a paragraph:

This allows us to link to it: https://github.com/dwyl/technical-glossary#spike

Todo

• [x] convert all terms to level 3 ### headings in the README.md so that we can link to them.
• [x] Add semantic line breaks https://sembr.org to all text for easy of reading/reviewing & maintaining.
  • [x] Put any links on their own line, again for easy of maintenance.
• [x] Create PR to update!

[nelsonic]

Just going to put on some EDM (pace-setting music) and blitz through this so it's done and I don't have to think about it anymore.

[nelsonic]

Done: #43 ✅

[SimonLab]

43 is now merged and we can close this issue