Update RELEASES.md

Co-authored-by: alexey semenyuk <[email protected]>

Author: BoxyUwU

RELEASES.md

@@ -98,7 +98,7 @@ Cargo
 
 Rustdoc
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-- [On mobile, make the sidebar full width and linewrap](https://github.com/rust-lang/rust/pull/139831).  This makes long section and item names much easier to deal with on mobile.
+- [On mobile, make the sidebar full width and linewrap](https://github.com/rust-lang/rust/pull/139831). This makes long section and item names much easier to deal with on mobile.
 
 
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