fix code

README.md

@@ -367,6 +367,21 @@ describing the error will be returned.
 
 [Back to TOC](#table-of-contents)
 
+resty.kong.tls.disable\_http2\_alpn
+----------------------------------------------------
+**syntax:** *ok, err = resty.kong.tls.disable\_http2\_alpn()*
+
+**context:** *client_hello_by_lua*
+
+**subsystems:** *http*
+
+Disables HTTP/2 ALPN negotiation for the current TLS connection. When called, the
+connection will not negotiate HTTP/2 using ALPN and will fallback to HTTP/1.1 even though [`http2`](https://nginx.org/en/docs/http/ngx_http_v2_module.html#http2) directive is enabled.
+
+This function returns `true` when the call is successful. Otherwise it returns `false` and a string describing the error.
+
+[Back to TOC](#table-of-contents)
+
 resty.kong.grpc.set\_authority
 ------------------------------
 **syntax:** *ok, err = resty.kong.grpc.set_authority(new_authority)*