Update .env.example

Author: bitcoinbender

.env.example

@@ -22,7 +22,7 @@ ETERNALAI_MODEL=                # Default: "neuralmagic/Meta-Llama-3.1-405B-Inst
 ETERNALAI_API_KEY=
 ETERNAL_AI_LOG_REQUEST=false #Default: false
 
-GROK_API_KEY=                   # GROK API Key
+GROK_API_KEY=                   # GROK/xAI API Key
 GROQ_API_KEY=                   # Starts with gsk_
 OPENROUTER_API_KEY=
 GOOGLE_GENERATIVE_AI_API_KEY=   # Gemini API key