add hyperlink (#4588)

### What this PR does / why we need it?
add hyperlink

### Does this PR introduce _any_ user-facing change?
no

### How was this patch tested?
ut

- vLLM version: v0.11.2

---------

Signed-off-by: herizhen <you@example.com>
Co-authored-by: herizhen <you@example.com>

docs/source/user_guide/feature_guide/kv_pool.md

@@ -29,7 +29,7 @@
 
         Also, you need to set environment variables to point to them `export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib64/python3.11/site-packages/mooncake`, or copy the .so files to the `/usr/local/lib64` directory after compilation
 
-### run mooncake master
+### Run Mooncake Master
 
 #### 1.Configure mooncake.json