Automatic merge from submit-queue

relocate FC multipath readme to examples from pkg/volume
Signed-off-by: rootfs <hchen@redhat.com>



**What this PR does / why we need it**:
`pkg/volume/README.md` is not a good place for Fiber Channel specific doc. Move the block into FC README.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```