Add doc for RoPE

Author: yqzhishen

docs/ConfigurationSchemas.md

@@ -1981,6 +1981,18 @@ Whether to use SinusoidalPositionalEmbedding in FastSpeech2 encoder.
 <tr><td align="center"><b>default</b></td><td>true</td>
 </tbody></table>
 
+### use_rope
+
+Whether to use RoPE (Rotary Positional Encoding) in FastSpeech2 encoder.
+
+<table><tbody>
+<tr><td align="center"><b>visibility</b></td><td>acoustic, variance</td>
+<tr><td align="center"><b>scope</b></td><td>nn</td>
+<tr><td align="center"><b>customizability</b></td><td>not recommended</td>
+<tr><td align="center"><b>type</b></td><td>boolean</td>
+<tr><td align="center"><b>default</b></td><td>true</td>
+</tbody></table>
+
 ### use_shallow_diffusion
 
 Whether to use shallow diffusion.