Improve documentation for fast-unstake pallet (#14101)

* improve documentation of fast-unstake pallet

* using Sam's crate now

* fix

* remove stuff not needed

* Some updates

* use new prelude.

* update

* some other fancy docs

* Update frame/fast-unstake/src/lib.rs

Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>

* Update frame/support/procedural/src/pallet/expand/mod.rs

Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>

* update

* Update frame/fast-unstake/src/lib.rs

Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>

* update

* fix no_std issue by updating to latest version of docify

* get things compiling by adding a use for StakingInterface

* fix docify paths to their proper values, still not working because bug

* embed working 🎉

* update syn

* upgrade to docify v0.1.10 for some fixes

* Apply suggestions from code review

Co-authored-by: Juan <juangirini@gmail.com>
Co-authored-by: Gonçalo Pestana <g6pestana@gmail.com>

* improve docs

* Update frame/support/procedural/src/pallet/expand/doc_only.rs

Co-authored-by: Juan <juangirini@gmail.com>

* fmt

* fix

* Update frame/support/procedural/src/pallet/expand/doc_only.rs

Co-authored-by: Muharem Ismailov <ismailov.m.h@gmail.com>

* Update frame/support/procedural/src/pallet/expand/config.rs

Co-authored-by: Muharem Ismailov <ismailov.m.h@gmail.com>

* Update frame/support/procedural/src/pallet/expand/config.rs

Co-authored-by: Muharem Ismailov <ismailov.m.h@gmail.com>

* remove redundant

* update docify rev

* update.

* update.

* update lock file

---------

Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>
Co-authored-by: Keith Yeung <kungfukeith11@gmail.com>
Co-authored-by: Sam Johnson <sam@durosoft.com>
Co-authored-by: Juan <juangirini@gmail.com>
Co-authored-by: Gonçalo Pestana <g6pestana@gmail.com>
Co-authored-by: Muharem Ismailov <ismailov.m.h@gmail.com>
Co-authored-by: parity-processbot <>

substrate/Cargo.lock

@@ -1289,6 +1289,12 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "common-path"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2382f75942f4b3be3690fe4f86365e9c853c1587d6ee58212cebf6e2a9ccd101"
+
 [[package]]
 name = "concurrent-queue"
 version = "2.2.0"
@@ -2028,6 +2034,33 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
 
+[[package]]
+name = "docify"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "18b972b74c30cbe838fc6a07665132ff94f257350e26fd01d80bc59ee7fcf129"
+dependencies = [
+ "docify_macros",
+]
+
+[[package]]
+name = "docify_macros"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c93004d1011191c56df9e853dca42f2012e7488638bcd5078935f5ce43e06cf3"
+dependencies = [
+ "common-path",
+ "derive-syn-parse",
+ "lazy_static",
+ "prettyplease 0.2.4",
+ "proc-macro2",
+ "quote",
+ "regex",
+ "syn 2.0.16",
+ "termcolor",
+ "walkdir",
+]
+
 [[package]]
 name = "downcast"
 version = "0.11.0"
@@ -6418,6 +6451,7 @@ dependencies = [
 name = "pallet-fast-unstake"
 version = "4.0.0-dev"
 dependencies = [
+ "docify",
  "frame-benchmarking",
  "frame-election-provider-support",
  "frame-support",