Automatic merge from submit-queue

pkg/labels: fix the godoc for Parse()

previously the formatting was broken for labels.Parse() function. I
fixed the spacing so it will format correctly for the generated go docs.
There was also a dangling "]" at the end of the first line so i deleted
it.



**What this PR does / why we need it**:

This fixes a formatting issue with the generated go documentation.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*:
**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```