Make links to permissions references

So PRIVACY can be read in the shell.

PRIVACY.md

@@ -7,14 +7,14 @@ hesitate to contact me.
 
 ## Permissions
 
-### [QUERY_ALL_PACKAGES](https://developer.android.com/reference/android/Manifest.permission#QUERY_ALL_PACKAGES)
+### [QUERY_ALL_PACKAGES][QUERY_ALL_PACKAGES]
 
 A launcher app needs to be able to query all packages to show all packages.
 
 You can find more information about package visibility
 [here](https://developer.android.com/training/basics/intents/package-visibility#all-apps).
 
-### [REQUEST_IGNORE_BATTERY_OPTIMIZATIONS](https://developer.android.com/reference/android/Manifest.permission#REQUEST_IGNORE_BATTERY_OPTIMIZATIONS)
+### [REQUEST_IGNORE_BATTERY_OPTIMIZATIONS][REQUEST_IGNORE_BATTERY_OPTIMIZATIONS]
 
 A launcher app is meant to be available all the time.
 
@@ -23,3 +23,6 @@ and make it work faster because the app does not need to be reloaded every
 time you unlock your phone.
 
 Pie Launcher does not consume battery when not in use.
+
+[QUERY_ALL_PACKAGES]: https://developer.android.com/reference/android/Manifest.permission#QUERY_ALL_PACKAGES
+[REQUEST_IGNORE_BATTERY_OPTIMIZATIONS]: https://developer.android.com/reference/android/Manifest.permission#REQUEST_IGNORE_BATTERY_OPTIMIZATIONS