ElevenLabs prompting docs link updated

README.md

@@ -107,7 +107,7 @@ For the [#above](#) TTS capability table. Open the [viewer](../../viewer/) in an
   * 🎭📖 strict control through prompt - prompt input parameter
 * Prompting 📖 - Also a side effect of narrator based datasets and a way to affect the emotional state
   * 📖 - Prompt as a separate input parameter
-  * 🗣📖 - The prompt itself is also spoken by TTS; [ElevenLabs docs](https://elevenlabs.io/docs/speech-synthesis/prompting#emotion)
+  * 🗣📖 - The prompt itself is also spoken by TTS; [ElevenLabs docs](https://elevenlabs.io/docs/best-practices/prompting/controls)
 * Streaming support 🌊 - Can playback audio while it is still being generated
 * Speech control 🎚 - Ability to change the pitch, duration, etc. for the whole and/or per-phoneme of the generated speech
 * Voice conversion / Speech-To-Speech 🦜 - Streaming support implies real-time S2S; S2T=>T2S does not count