fix links

Author: est31

Diff for: src/names/scopes.md

@@ -352,7 +352,6 @@ impl ImplExample {
 [`macro_use`]: ../macros-by-example.md#the-macro_use-attribute
 [`match` arms]: ../expressions/match-expr.md
 [`Self`]: ../paths.md#self-1
-[`while let`]: ../expressions/loop-expr.md#predicate-pattern-loops
 [Associated consts]: ../items/associated-items.md#associated-constants
 [associated items]: ../items/associated-items.md
 [Asterisk glob imports]: ../items/use-declarations.md