Fix code blocks color in ayu theme

Author: GuillaumeGomez

src/librustdoc/html/static/css/themes/ayu.css

@@ -40,7 +40,7 @@ h4 {
 .code-header {
 	color: #e6e1cf;
 }
-pre > code {
+.docblock pre > code, pre > code {
 	color: #e6e1cf;
 }
 span code {

src/test/rustdoc-gui/src/test_docs/lib.rs

@@ -25,6 +25,8 @@ use std::fmt;
 /// ```ignore (it's a test)
 /// Let's say I'm just some text will ya?
 /// ```
+///
+/// An inlined `code`!
 pub fn foo() {}
 
 /// Just a normal struct.