Change JSON policy example from 'paths' to 'path' (#1721)

* Change JSON policy example from 'paths' to 'path'

Signed-off-by: Nate Tessman <madgvox@gmail.com>

* Add changelog

Signed-off-by: Nate Tessman <madgvox@gmail.com>

* Delete changelog/1721.txt

Signed-off-by: Alexander Scheel <alexander.m.scheel@gmail.com>

---------

Signed-off-by: Nate Tessman <madgvox@gmail.com>
Signed-off-by: Alexander Scheel <alexander.m.scheel@gmail.com>
Co-authored-by: Alexander Scheel <alexander.m.scheel@gmail.com>

Author: Madgvox

website/content/docs/concepts/policies.mdx

@@ -95,7 +95,7 @@ Equivalently in JSON, this would be:
 
 ```json
 {
-  "paths": {
+  "path": {
     "secret/foo": {
       "capabilities": ["read"]
     }