fix(docs): make sure to pass a valid version to semver

When running the docs locally, master could be the only version in versions.txt, and semver doesn't like it.
By hardcoding in insanely high version number, we avoid that while making sure that we get all the modules for the latest version.
Merge pull request #257 from silvolu/docs-local-master-fix

fix(docs): make sure to pass a valid version to semver