Add redirects for registry links

Co-authored-by: Eric Huss <eric@huss.org>

Author: arlosi

src/doc/src/reference/registries.md

@@ -99,3 +99,28 @@ token = "854DvwSlUwEHtIo3kWy6x7UCPKHfzCmy"
 [`cargo package`]: ../commands/cargo-package.md
 [`cargo login`]: ../commands/cargo-login.md
 [config]: config.md
+
+<script>
+(function() {
+    var fragments = {
+        "#running-a-registry": "running-a-registry.html",
+        "#index-format": "registry-index.html",
+        "#web-api": "registry-web-api.html",
+        "#publish": "registry-web-api.html#publish",
+        "#yank": "registry-web-api.html#yank",
+        "#unyank": "registry-web-api.html#unyank",
+        "#owners": "registry-web-api.html#owners",
+        "#owners-list": "registry-web-api.html#owners-list",
+        "#owners-add": "registry-web-api.html#owners-add",
+        "#owners-remove": "registry-web-api.html#owners-remove",
+        "#search": "registry-web-api.html#search",
+        "#login": "registry-web-api.html#login",
+    };
+    var target = fragments[window.location.hash];
+    if (target) {
+        var url = window.location.toString();
+        var base = url.substring(0, url.lastIndexOf('/'));
+        window.location.replace(base + "/" + target);
+    }
+})();
+</script>