clarify image version format
The version written to the `/must-gather/version` should more closely match the SemVer format used elsewhere in OpenShift (vs. the OSGi-type format specified here originally).
@@ -85,7 +85,7 @@ To provide your own must-gather image, it must....
1. Must have a zero-arg, executable file at `/usr/bin/gather` that does your default gathering
2. Must produce data to be copied back at `/must-gather`. The data must not contain any sensitive data. We don't string PII information, only secret information.
-3. Must produce a text `/must-gather/version` that indicates the product (first line) and the version (second line, `major.minor.micro.qualifier`),
+3. Must produce a text `/must-gather/version` that indicates the product (first line) and the version (second line, `major.minor.micro-qualifier`),
so that programmatic analysis can be developed.
### local fall-back
