[docs] GPT-5.1 Prompting Guide (#2235)

Author: samarth-oai

authors.yaml

@@ -537,3 +537,8 @@ roost:
   name: "ROOST"
   website: "https://roost.tools"
   avatar: "https://avatars.githubusercontent.com/u/189051351?v=4"
+
+samarth-oai:
+  name: "Samarth Madduru"
+  website: "https://x.com/samarthmadduru"
+  avatar: "https://pbs.twimg.com/profile_images/1911309450368970752/6IFoTpmu_400x400.jpg"