Add or enable descriptions in some Python algorithms re #6994

The wikimaker requires double quotes in the *WIKI* comment.

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Update Le Bail Fit descriptions to fit in with earlier work re #6994

Signed-off-by: Karl Palmen <karl.palmen@stfc.ac.uk>
Merge branch 'feature/6994_wikimaker' into develop