Do not escape forward slashes in Printer::printDescription

Author: ruudk

CHANGELOG.md

@@ -9,6 +9,12 @@ You can find and compare releases at the [GitHub release page](https://github.co
 
 ## Unreleased
 
+## v15.29.2
+
+### Fixed
+
+- Do not escape forward slashes in `Printer::printDescription` https://github.com/webonyx/graphql-php/pull/1824
+
 ## v15.29.1
 
 ### Fixed

src/Utils/SchemaPrinter.php

@@ -254,7 +254,7 @@ protected static function printDescription(array $options, $def, string $indenta
             : $indentation;
 
         if (count(Utils::splitLines($description)) === 1) {
-            $description = json_encode($description, JSON_THROW_ON_ERROR | JSON_UNESCAPED_UNICODE);
+            $description = json_encode($description, JSON_THROW_ON_ERROR | JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
         } else {
             $description = BlockString::print($description);
             $description = $indentation !== ''

tests/Utils/SchemaPrinterTest.php

@@ -1049,7 +1049,7 @@ public function testPrintIntrospectionSchema(): void
 
       "Marks an element of a GraphQL schema as no longer supported."
       directive @deprecated(
-        "Explains why this element was deprecated, usually also including a suggestion for how to access supported similar data. Formatted using the Markdown syntax, as specified by [CommonMark](https:\/\/commonmark.org\/)."
+        "Explains why this element was deprecated, usually also including a suggestion for how to access supported similar data. Formatted using the Markdown syntax, as specified by [CommonMark](https://commonmark.org/)."
         reason: String = "No longer supported"
       ) on FIELD_DEFINITION | ENUM_VALUE | ARGUMENT_DEFINITION | INPUT_FIELD_DEFINITION