Fix spelling issues

Signed-off-by: Vincenzo Scamporlino <me@vinzscam.dev>

.github/vale/Vocab/Backstage/accept.txt

@@ -218,6 +218,8 @@ performant
 Performant
 periskop
 Periskop
+permissioned
+permissioning
 plantuml
 Platformize
 Podman
@@ -309,6 +311,7 @@ Templaters
 theia
 thumbsup
 todo
+todos
 tolerations
 Tolerations
 toolchain

docs/permission/concepts.md

@@ -6,7 +6,7 @@ description: A list of important permission framework concepts
 
 ### Permission
 
-Any action that a user performs within Backstage may be represented as a permission. More complex actions, like executing a software template, may require authorization for multiple permissions throughout the flow. Permissions are identified by a unique name and optionally include a set of attributes that describe the correponding action. Plugins are responsible for defining and exposing the permissions they enforce.
+Any action that a user performs within Backstage may be represented as a permission. More complex actions, like executing a software template, may require authorization for multiple permissions throughout the flow. Permissions are identified by a unique name and optionally include a set of attributes that describe the corresponding action. Plugins are responsible for defining and exposing the permissions they enforce.
 
 ### Policy
 

docs/permission/plugin-authors/04-authorizing-access-to-paginated-data.md

@@ -150,4 +150,4 @@ import {
     }
 ```
 
-Once the changes to the permission policy are saved, the UI should should show only the todo items you've created.
+Once the changes to the permission policy are saved, the UI should show only the todo items you've created.