Two redirection links in Core Libraries documentation not working

[tobimd]

Two links from beef core libraries overview. These are not a big deal really, but just in case:

• Dictionary returns 404 error because Beef Corlib docs does not have defined documentation for it.
• Text Encoding has a forward slash missing after the "html" ("...corlib/htmlclass_system...")

[Ivo-Balbaert]

• Dictionary now points to https://www.beeflang.org/docs/doxygen/corlib/html/namespace_system_1_1_collections.html

• Text Encoding now points to: https://www.beeflang.org/docs/doxygen/corlib/html/class_system_1_1_text_1_1_encoding.html

So I think this issue can be closed.