Update Startup.cs

[cuperman007]

Conflicting name for contexts using expressions

What issue does this PR address? Conflicting name in expression body

Does this PR introduce a breaking change? No

Please check if the PR fulfills these requirements

• [x] The commit follows our guidelines
• [x] Unit Tests for the changes have been added (for bug fixes / features)

Other information: Unit tests not applicable, code builds after template has been created.