Link to swagger-codegen-maven-plugin broken

[Christian1984]

Description

The link to the swagger-codegen-maven-plugin documentation (https://github.com/swagger-api/swagger-codegen/blob/3.0.0/docs/modules/swagger-codegen-maven-plugin/README.md) on https://github.com/swagger-api/swagger-codegen/blob/3.0.0/docs/workflow-integration.md is broken.

Swagger-codegen version

N/A

Swagger declaration file content or url

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Command line used for generation

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Steps to reproduce

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Related issues/PRs

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Suggest a fix/enhancement

Link should point to https://github.com/swagger-api/swagger-codegen/blob/master/modules/swagger-codegen-maven-plugin/README.md

[ponelat]

Should be addressed in #12485
Thanks @Christian1984 (and @micryc )!