Fix missing apostrophe in tasks.md

fix missing apostrophe in tasks.md

docs/tasks.md

@@ -74,7 +74,7 @@ A `Task` definition supports the following fields:
  - [`results`](#emitting-results) - Specifies the file to which the `Tasks` writes its execution results.
  - [`volumes`](#specifying-volumes) - Specifies one or more volumes that will be available available to the `Steps` in the `Task`.
  - [`stepTemplate`](#specifying-a-step-template) - Specifies a `Container` step definition to use as the basis for all `Steps` in the `Task`.
- - [`sidecars`](#specifying-sidecars) - Specifies `Sidecar` containers to run alongside the `Steps` in the `Task.
+ - [`sidecars`](#specifying-sidecars) - Specifies `Sidecar` containers to run alongside the `Steps` in the `Task`.
 
 [kubernetes-overview]:
  https://kubernetes.io/docs/concepts/overview/working-with-objects/kubernetes-objects/#required-fields