Created ExcelToolkitWiki.cs

[desaiwangBH]

Issues addressed by this PR

Closes #30

• method returns the wiki documentation link
• resolves reference to Excel_Toolkit wiki inside UI_Ribbon (see issue here).

Test files

Changelog

Additional comments

[FraserGreenroyd]

Code changes look good

[FraserGreenroyd]

@BHoMBot check core
@BHoMBot check compliance

[bhombot-ci]

@FraserGreenroyd to confirm, the following actions are now queued:

• check core
• check code-compliance
• check documentation-compliance
• check project-compliance
• check branch-compliance
• check dataset-compliance
• check copyright-compliance

There are 3 requests in the queue ahead of you.

[FraserGreenroyd]

@BHoMBot check installer

[bhombot-ci]

@FraserGreenroyd to confirm, the following actions are now queued:

• check installer

[FraserGreenroyd]

@BHoMBot check versioning
@BHoMBot check null-handling
@BHoMBot check serialisation

[bhombot-ci]

@FraserGreenroyd to confirm, the following actions are now queued:

• check versioning
• check null-handling
• check serialisation

[FraserGreenroyd]

@BHoMBot this is a DevOps instruction. I am requesting neutral checks on: versioning, ready-to-merge

[bhombot-ci]

@FraserGreenroyd I have provided neutral checks to the checks requested. These checks will need to be run properly to obtain full results.