Merge pull request #5604 from cstyan/default-capacity-docs

Update queue config documentation

docs/configuration/configuration.md

@@ -1288,8 +1288,8 @@ tls_config:
 
 # Configures the queue used to write to remote storage.
 queue_config:
-  # Number of samples to buffer per shard before we start dropping them.
-  [ capacity: <int> | default = 10000 ]
+  # Number of samples to buffer per shard before we block reading of more samples from the WAL.
+  [ capacity: <int> | default = 10 ]
   # Maximum number of shards, i.e. amount of concurrency.
   [ max_shards: <int> | default = 1000 ]
   # Minimum number of shards, i.e. amount of concurrency.