Minor fixes

Signed-off-by: Natalie Arellano <[email protected]>

Author: Natalie Arellano

content/docs/extension-author-guide/create-extension/build-dockerfile.md

@@ -12,7 +12,7 @@ weight=404
 
 #### generate
 
-`cat extensions/tree/bin/generate` - the extension generates a `build.Dockerfile` that installs `tree` on the builder
+`cat $workspace/samples/extensions/tree/bin/generate` - the extension generates a `build.Dockerfile` that installs `tree` on the builder
   image
 
 ### Re-create our builder with `hello-extensions` updated to require `tree`

content/docs/extension-author-guide/create-extension/run-dockerfile.md

@@ -12,7 +12,7 @@ weight=405
 
 #### generate
 
-`cat extensions/curl/bin/generate` - the extension generates a `run.Dockerfile` that switches the run image to
+`cat $workspace/samples/extensions/curl/bin/generate` - the extension generates a `run.Dockerfile` that switches the run image to
   reference `run-image-curl`
 
 ### Build a run image for `curl` extension to use