Change known problems

Author: camsteffen

clippy_lints/src/unnecessary_wraps.rs

@@ -17,8 +17,8 @@ declare_clippy_lint! {
     ///
     /// **Why is this bad?** It is not meaningful to wrap values when no `None` or `Err` is returned.
     ///
-    /// **Known problems:** Since this lint changes function type signature, you may need to
-    /// adjust some code at callee side.
+    /// **Known problems:** There can be false positives if the function signature is designed to
+    /// fit some external requirement.
     ///
     /// **Example:**
     ///