Move attribute examples to earlier in the chapter

Author: ehuss

src/attributes.md

@@ -25,9 +25,43 @@ on Attributes in [ECMA-335], with the syntax coming from [ECMA-334] \(C#).
 r[attributes.inner]
 _Inner attributes_, written with a bang (`!`) after the hash (`#`), apply to the form that the attribute is declared within.
 
+> [!EXAMPLE]
+> ```rust
+> // General metadata applied to the enclosing module or crate.
+> #![crate_type = "lib"]
+>
+> // Inner attribute applies to the entire function.
+> fn some_unused_variables() {
+>   #![allow(unused_variables)]
+>
+>   let x = ();
+>   let y = ();
+>   let z = ();
+> }
+> ```
+
 r[attributes.outer]
 _Outer attributes_, written without the bang after the hash, apply to the form that follows the attribute.
 
+> [!EXAMPLE]
+> ```rust
+> // A function marked as a unit test
+> #[test]
+> fn test_foo() {
+>     /* ... */
+> }
+>
+> // A conditionally-compiled module
+> #[cfg(target_os = "linux")]
+> mod bar {
+>     /* ... */
+> }
+>
+> // A lint attribute used to suppress a warning/error
+> #[allow(non_camel_case_types)]
+> type int8_t = i8;
+> ```
+
 r[attributes.input]
 The attribute consists of a path to the attribute, followed by an optional
 delimited token tree whose interpretation is defined by the attribute.
@@ -75,38 +109,6 @@ Attributes may be applied to many forms in the language:
   parameters accept outer attributes. This includes attributes on variadic parameters
   denoted with `...` in function pointers and [external blocks][variadic functions].
 
-Some examples of attributes:
-
-```rust
-// General metadata applied to the enclosing module or crate.
-#![crate_type = "lib"]
-
-// A function marked as a unit test
-#[test]
-fn test_foo() {
-    /* ... */
-}
-
-// A conditionally-compiled module
-#[cfg(target_os = "linux")]
-mod bar {
-    /* ... */
-}
-
-// A lint attribute used to suppress a warning/error
-#[allow(non_camel_case_types)]
-type int8_t = i8;
-
-// Inner attribute applies to the entire function.
-fn some_unused_variables() {
-  #![allow(unused_variables)]
-
-  let x = ();
-  let y = ();
-  let z = ();
-}
-```
-
 r[attributes.meta]
 ## Meta item attribute syntax