chart: improve comments

Signed-off-by: roc <[email protected]>

Author: imroc

charts/tke-extend-network-controller/values.yaml

@@ -28,7 +28,7 @@ concurrency:
   clbPortPoolController: 10
   dedicatedClbServiceController: 1
 
-# -- Precisely control the frequency limit of cloud API calls to avoid frequent over-limits
+# -- Precisely control the QPS of cloud API calls to avoid frequent over-limits
 # in large-scale scenarios, resulting in excessive retries and reduced scaling speed.
 apiRateLimit:
   DescribeLoadBalancers: 20