Fix docs urls (#11966)

* Fix docs urls

* Update bin/node-template/README.md

* Update frame/aura/src/lib.rs

* Run cargo +nightly fmt

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>

substrate/frame/support/procedural/src/pallet/expand/error.rs

@@ -111,7 +111,7 @@ pub fn expand_error(def: &mut Def) -> proc_macro2::TokenStream {
 	if get_doc_literals(&error_item.attrs).is_empty() {
 		error_item.attrs.push(syn::parse_quote!(
 			#[doc = r"
-			Custom [dispatch errors](https://docs.substrate.io/v3/runtime/events-and-errors)
+			Custom [dispatch errors](https://docs.substrate.io/main-docs/build/events-errors/)
 			of this pallet.
 			"]
 		));

substrate/frame/support/procedural/src/pallet/expand/event.rs

@@ -98,7 +98,7 @@ pub fn expand_event(def: &mut Def) -> proc_macro2::TokenStream {
 	if get_doc_literals(&event_item.attrs).is_empty() {
 		event_item.attrs.push(syn::parse_quote!(
 			#[doc = r"
-			The [event](https://docs.substrate.io/v3/runtime/events-and-errors) emitted
+			The [event](https://docs.substrate.io/main-docs/build/events-errors/) emitted
 			by this pallet.
 			"]
 		));

substrate/frame/support/procedural/src/pallet/expand/mod.rs

@@ -74,7 +74,7 @@ pub fn expand(mut def: Def) -> proc_macro2::TokenStream {
 		def.item.attrs.push(syn::parse_quote!(
 			#[doc = r"
 			The module that hosts all the
-			[FRAME](https://docs.substrate.io/v3/runtime/frame)
+			[FRAME](https://docs.substrate.io/main-docs/build/events-errors/)
 			types needed to add this pallet to a
 			runtime.
 			"]

substrate/frame/support/procedural/src/pallet/expand/pallet_struct.rs

@@ -62,7 +62,7 @@ pub fn expand_pallet_struct(def: &mut Def) -> proc_macro2::TokenStream {
 	if get_doc_literals(&pallet_item.attrs).is_empty() {
 		pallet_item.attrs.push(syn::parse_quote!(
 			#[doc = r"
-			The [pallet](https://docs.substrate.io/v3/runtime/frame#pallets) implementing
+			The [pallet](https://docs.substrate.io/reference/frame-pallets/#pallets) implementing
 			the on-chain logic.
 			"]
 		));