Update READMEs, fix links (#7176)

* Re-generate READMEs to fix doc links; set readme field in package manifests

* Re-generate READMEs to fix doc links; set readme field in package manifests

* Re-generate READMEs to fix doc links; set readme field in package manifests

* Re-generate READMEs to fix doc links; set readme field in package manifests

* Revert stuff that shouldn't have been committed

* Revert stuff that shouldn't have been committed

* Fix parent relative link generation

* Manually remove this incorrect link for now.

substrate/frame/system/README.md

@@ -3,12 +3,12 @@
 The System module provides low-level access to core types and cross-cutting utilities.
 It acts as the base layer for other pallets to interact with the Substrate framework components.
 
-- [`system::Trait`](./trait.Trait.html)
+- [`system::Trait`](https://docs.rs/frame-system/latest/frame_system/trait.Trait.html)
 
 ## Overview
 
 The System module defines the core data types used in a Substrate runtime.
-It also provides several utility functions (see [`Module`](./struct.Module.html)) for other FRAME pallets.
+It also provides several utility functions (see [`Module`](https://docs.rs/frame-system/latest/frame_system/struct.Module.html)) for other FRAME pallets.
 
 In addition, it manages the storage items for extrinsics data, indexes, event records, and digest items,
 among other things that support the execution of the current block.
@@ -24,7 +24,7 @@ The System module does not implement any dispatchable functions.
 
 ### Public Functions
 
-See the [`Module`](./struct.Module.html) struct for details of publicly available functions.
+See the [`Module`](https://docs.rs/frame-system/latest/frame_system/struct.Module.html) struct for details of publicly available functions.
 
 ### Signed Extensions