Merge pull request kubernetes#6632 from xuhuilong/patch-13

Update podpreset.md

Author: tengqm

docs/concepts/workloads/pods/podpreset.md

@@ -41,7 +41,7 @@ When a pod creation request occurs, the system does the following:
    the pod _without_ any injected resources from the `PodPreset`.
 1. Annotate the resulting modified Pod spec to indicate that it has been
    modified by a `PodPreset`. The annotation is of the form
-   `podpreset.admission.kubernetes.io/podpreset-<pod-preset name>": "<resource version>"`.
+   `podpreset.admission.kubernetes.io/podpreset-<pod-preset name>: "<resource version>"`.
 
 Each Pod can be matched zero or more Pod Presets; and each `PodPreset` can be
 applied to zero or more pods. When a `PodPreset` is applied to one or more