Fix test

Author: camelid

tests/rustdoc-gui/sidebar.goml

@@ -67,7 +67,7 @@ assert-text: (".sidebar-elems section ul > li:nth-child(5)", "Enums")
 assert-text: (".sidebar-elems section ul > li:nth-child(6)", "Constants")
 assert-text: (".sidebar-elems section ul > li:nth-child(7)", "Traits")
 assert-text: (".sidebar-elems section ul > li:nth-child(8)", "Functions")
-assert-text: (".sidebar-elems section ul > li:nth-child(9)", "Type Definitions")
+assert-text: (".sidebar-elems section ul > li:nth-child(9)", "Type Aliases")
 assert-text: (".sidebar-elems section ul > li:nth-child(10)", "Unions")
 assert-text: (".sidebar-elems section ul > li:nth-child(11)", "Keywords")
 assert-text: ("#structs + .item-table .item-name > a", "Foo")
@@ -102,7 +102,7 @@ assert-text: (".sidebar-elems > section ul.block > li:nth-child(1)", "Modules")
 assert-text: (".sidebar-elems > section ul.block > li:nth-child(2)", "Structs")
 assert-text: (".sidebar-elems > section ul.block > li:nth-child(3)", "Traits")
 assert-text: (".sidebar-elems > section ul.block > li:nth-child(4)", "Functions")
-assert-text: (".sidebar-elems > section ul.block > li:nth-child(5)", "Type Definitions")
+assert-text: (".sidebar-elems > section ul.block > li:nth-child(5)", "Type Aliases")
 assert-text: ("#functions + .item-table .item-name > a", "foobar")
 click: "#functions + .item-table .item-name > a"