Remove dead link to character

[Jym77]

<< Describe the changes >>
"Fixing" a dead link (to glossary) by removing it.

Closes issue(s):

• Missing definition of "character" linked to from "matching characters" definition #783

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[jeeyyy]

May be create an issue for why this was not caught in a test case.

[Jym77]

Issue was #829 with PR in place #857