Deduplicate "attributes" and "attribute macros" sections IDs

Author: GuillaumeGomez

src/librustdoc/html/static/js/main.js

@@ -799,7 +799,7 @@ function preLoadCss(cssUrl) {
             block("foreigntype", "foreign-types", "Foreign Types");
             block("keyword", "keywords", "Keywords");
             block("attribute", "attributes", "Attributes");
-            block("attr", "attributes", "Attribute Macros");
+            block("attr", "attribute-macros", "Attribute Macros");
             block("derive", "derives", "Derive Macros");
             block("traitalias", "trait-aliases", "Trait Aliases");
         }

tests/rustdoc-gui/attr-macros.goml

@@ -27,7 +27,7 @@ assert-count: ("#main-content a[href='macro.attr_macro.html']", 2)
 // First in the "Macros" section.
 assert-text: ("#macros + .item-table a[href='macro.attr_macro.html']", "attr_macro")
 // Then in the "Attribute Macros" section.
-assert-text: ("#attributes + .item-table a[href='macro.attr_macro.html']", "attr_macro")
+assert-text: ("#attribute-macros + .item-table a[href='macro.attr_macro.html']", "attr_macro")
 
 // And finally we check it's correctly listed in the "all items" page.
 go-to: "file://" + |DOC_PATH| + "/test_docs/all.html"
@@ -36,4 +36,4 @@ assert-count: ("#main-content a[href='macro.attr_macro.html']", 2)
 // First in the "Macros" section.
 assert-text: ("#macros + .all-items a[href='macro.attr_macro.html']", "attr_macro")
 // Then in the "Attribute Macros" section.
-assert-text: ("#attributes + .all-items a[href='macro.attr_macro.html']", "attr_macro")
+assert-text: ("#attribute-macros + .all-items a[href='macro.attr_macro.html']", "attr_macro")