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/executive/Cargo.toml

@@ -7,6 +7,7 @@ license = "Apache-2.0"
 homepage = "https://substrate.dev"
 repository = "https://github.com/paritytech/substrate/"
 description = "FRAME executives engine"
+readme = "README.md"
 
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]

substrate/frame/executive/README.md

@@ -7,7 +7,7 @@ extrinsic calls to the respective modules in the runtime.
 
 The executive module is not a typical pallet providing functionality around a specific feature.
 It is a cross-cutting framework component for the FRAME. It works in conjunction with the
-[FRAME System module](../frame_system/index.html) to perform these cross-cutting functions.
+[FRAME System module](https://docs.rs/frame-system/latest/frame_system/) to perform these cross-cutting functions.
 
 The Executive module provides functions to:
 
@@ -27,7 +27,7 @@ The Executive module provides the following implementations:
 
 ## Usage
 
-The default Substrate node template declares the [`Executive`](./struct.Executive.html) type in its library.
+The default Substrate node template declares the [`Executive`](https://docs.rs/frame-executive/latest/frame_executive/struct.Executive.html) type in its library.
 
 ### Example