Removal of multiple embedded spaces in literals in DER (WIP)

[mereolog]

Signed-off-by: mereolog pawel.garbacz@makolab.com

Description

This PR removed multiple embedded spaces from the literals in DER ontologies.

Fixes: #1817

Checklist:

• [X] I'm familiar with the FIBO developer quide. My contribution meets all the requirements described there.
• [X] My contribution follows the principles of best practices for FIBO.
• [X] My changes have been reconciled with latest master and no merge conflicts remain.
• [X] This PR is related to exactly one issue. The issue is referenced by using a GitHub keyword such as "fixes", "closes", or "resolves".
• [X] Hygiene tests have been applied by a PR with "(WIP)" in title.
• [X] The issue has been tested locally using a reasoner (for ontology changes).

[ElisaKendall]

@mereolog This could be closed to the other DER pull request for DER-123 if you are ok with that. You'll see that I've fixed the other two files in the context of that pull request in addition to Options, which we are working on.