Fix check runtime CI (#8930)

* Fix check_runtime.sh script

* contracts: Remove confusing "Related Modules" doc

.maintain/gitlab/check_runtime.sh

@@ -56,9 +56,9 @@ fi
 # consensus-critical logic that has changed. the runtime wasm blobs must be
 # rebuilt.
 
-add_spec_version="$(git diff "tags/release...${CI_COMMIT_SHA}" "${VERSIONS_FILE}" \
+add_spec_version="$(git diff tags/release ${CI_COMMIT_SHA} -- "${VERSIONS_FILE}" \
 	| sed -n -r "s/^\+[[:space:]]+spec_version: +([0-9]+),$/\1/p")"
-sub_spec_version="$(git diff "tags/release...${CI_COMMIT_SHA}" "${VERSIONS_FILE}" \
+sub_spec_version="$(git diff tags/release ${CI_COMMIT_SHA} -- "${VERSIONS_FILE}" \
 	| sed -n -r "s/^\-[[:space:]]+spec_version: +([0-9]+),$/\1/p")"
 
 
@@ -79,9 +79,9 @@ else
 	# check for impl_version updates: if only the impl versions changed, we assume
 	# there is no consensus-critical logic that has changed.
 
-	add_impl_version="$(git diff "tags/release...${CI_COMMIT_SHA}" "${VERSIONS_FILE}" \
+	add_impl_version="$(git diff tags/release ${CI_COMMIT_SHA} -- "${VERSIONS_FILE}" \
 		| sed -n -r 's/^\+[[:space:]]+impl_version: +([0-9]+),$/\1/p')"
-	sub_impl_version="$(git diff "tags/release...${CI_COMMIT_SHA}" "${VERSIONS_FILE}" \
+	sub_impl_version="$(git diff tags/release ${CI_COMMIT_SHA} -- "${VERSIONS_FILE}" \
 		| sed -n -r 's/^\-[[:space:]]+impl_version: +([0-9]+),$/\1/p')"
 
 

frame/contracts/src/lib.rs

@@ -76,10 +76,6 @@
 //! * [`ink`](https://github.com/paritytech/ink) is
 //! an [`eDSL`](https://wiki.haskell.org/Embedded_domain_specific_language) that enables writing
 //! WebAssembly based smart contracts in the Rust programming language. This is a work in progress.
-//!
-//! ## Related Modules
-//!
-//! * [Balances](../pallet_balances/index.html)
 
 #![cfg_attr(not(feature = "std"), no_std)]
 #![cfg_attr(feature = "runtime-benchmarks", recursion_limit="512")]