Update P2P-reading-in-weed-mount.md

P2P-reading-in-weed-mount.md

@@ -11,12 +11,15 @@ The design is documented in [design-weed-mount-peer-chunk-sharing.md](https://gi
 ```mermaid
 flowchart LR
     Filer["Filer<br/>mount registry"]
-    Mounts["weed mount fleet<br/>(peer directory + cache)"]
+    MountA["weed mount"]
+    MountB["weed mount"]
     Volumes["Volume servers"]
 
-    Mounts -- "register / list" --> Filer
-    Mounts <-- "announce / lookup / fetch" --> Mounts
-    Mounts -. "fallback" .-> Volumes
+    MountA --- Filer
+    MountB --- Filer
+    MountA <-- "peer fetch" --> MountB
+    MountA -. "fallback" .-> Volumes
+    MountB -. "fallback" .-> Volumes
 ```
 
 ### Chunk read sequence