Fix typo in wrapping_shl documentation

Author: Pratyush

library/core/src/num/int_macros.rs

@@ -1211,7 +1211,7 @@ any high-order bits of `rhs` that would cause the shift to exceed the bitwidth o
 
 Note that this is *not* the same as a rotate-left; the RHS of a wrapping shift-left is restricted to
 the range of the type, rather than the bits shifted out of the LHS being returned to the other end.
-The primitive integer types all implement a `[`rotate_left`](#method.rotate_left) function,
+The primitive integer types all implement a [`rotate_left`](#method.rotate_left) function,
 which may be what you want instead.
 
 # Examples