#720: Put IDEasy-contribution-getting-started doc up-to-date.

[nmCapG]

Fixes #720. Put some information up-to-date in ./documentation/IDEasy-contribution-getting-started doc.

[CLAassistant]

All committers have signed the CLA.

[coveralls]

Pull Request Test Coverage Report for Build 11630492391

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 66.917%

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Totals
Change from base Build 11611407607:	0.0%
Covered Lines:	6303
Relevant Lines:	9076

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💛 - Coveralls