Reserve extension id range for protoc-gen-checker (#9133)

diff --git a/docs/options.md b/docs/options.md
index 159951a..6608bed 100644
--- a/docs/options.md
+++ b/docs/options.md
@@ -292,3 +292,7 @@
 1. Protoc-gen-jsonschema
    * Website: https://github.com/chrusty/protoc-gen-jsonschema
    * Extension: 1125-1129
+
+1. Protoc-gen-checker
+   * Website: https://github.com/Intrinsec/protoc-gen-checker
+   * Extension: 1130-1139