edits to some headings x 2 (#22563)

## Description

Update to additional headings: just one.

General comment: best to steer away from gerunds (-ing ending) in
headings. Most of the headings are not that, so, consistency is best.

## Related issues or tickets

Issue 22559, second PR on that issues.

## Reviews

To Sarah Sanders for review.

Author: genwhittTTD

data/engine-cli/docker_image_build.yaml

@@ -51,7 +51,7 @@ long: |-
     file to exclude files and directories that you don't require in your build from
     being sent as part of the build context.
 
-    #### Accessing paths outside the build context
+    #### Access paths outside the build context
 
     The legacy builder will error out if you try to access files outside of the
     build context using relative paths in your Dockerfile.