Remove link to Masterminds/semver repository in `is_semver` docs (#1894)
Remove link to Masterminds/semver repository in `is_semver` docs (#1894)

There's no need for the `is_semver` documentation to link to the Go
package we use to implement that builtin, since it's an internal
implementation detail.
thought-machine/please,thought-machine/please,thought-machine/please,thought-machine/please,thought-machine/please,thought-machine/please