docs: fix web-components link in README

[nekator]

Proposed changes

fix link to web-components in readme

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (fix on existing components or architectural decisions)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Further comments

[mfranzke]

@nekator thanks a lot, good catch !