move lint documentation into macro invocations

clippy_lints/src/assertions_on_constants.rs

@@ -6,23 +6,23 @@ use crate::syntax::ast::LitKind;
 use crate::utils::{in_macro, is_direct_expn_of, span_help_and_lint};
 use if_chain::if_chain;
 
-/// **What it does:** Check to call assert!(true/false)
-///
-/// **Why is this bad?** Will be optimized out by the compiler or should probably be replaced by a
-/// panic!() or unreachable!()
-///
-/// **Known problems:** None
-///
-/// **Example:**
-/// ```rust
-/// assert!(false)
-/// // or
-/// assert!(true)
-/// // or
-/// const B: bool = false;
-/// assert!(B)
-/// ```
 declare_clippy_lint! {
+    /// **What it does:** Check to call assert!(true/false)
+    ///
+    /// **Why is this bad?** Will be optimized out by the compiler or should probably be replaced by a
+    /// panic!() or unreachable!()
+    ///
+    /// **Known problems:** None
+    ///
+    /// **Example:**
+    /// ```rust
+    /// assert!(false)
+    /// // or
+    /// assert!(true)
+    /// // or
+    /// const B: bool = false;
+    /// assert!(B)
+    /// ```
     pub ASSERTIONS_ON_CONSTANTS,
     style,
     "assert!(true/false) will be optimized out by the compiler/should probably be replaced by a panic!() or unreachable!()"