update app.example.ini to match documentation

See https://gitea.com/gitea/docs/pulls/208

Author: bohde

custom/conf/app.example.ini

@@ -926,7 +926,6 @@ LEVEL = Info
 ;USER_DELETE_WITH_COMMENTS_MAX_TIME = 0
 ;; Valid site url schemes for user profiles
 ;VALID_SITE_URL_SCHEMES=http,https
-;;
 
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 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@@ -945,21 +944,28 @@ LEVEL = Info
 ;;
 ;; Disable the code explore page.
 ;DISABLE_CODE_PAGE = false
-;;
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;[qos]
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Enable request quality of service and load shedding.
+;;
+;; Enable request quality of service and overload protection.
 ; ENABLED = false
-;; The number of requests that are in flight to service before queuing
-;; begins. Default is 4 * number of CPUs
+;;
+;; The maximum number of concurrent requests that the server will
+;; process before enqueueing new requests. Default is "CpuNum * 4".
 ; MAX_INFLIGHT =
-;; The maximum number of requests that can be enqueued before they will be dropped.
+;;
+;; The maximum number of requests that can be enqueued before new
+;; requests will be dropped.
 ; MAX_WAITING = 100
-;; The target time for a request to be enqueued before it might be dropped.
+;;
+;; Target maximum wait time a request may be enqueued for. Requests
+;; that are enqueued for less than this amount of time will not be
+;; dropped. When wait times exceed this amount, a portion of requests
+;; will be dropped until wait times have decreased below this amount.
 ; TARGET_WAIT_TIME = 250ms
 
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
@@ -1455,7 +1461,6 @@ LEVEL = Info
 ;; or use comma separated list: inline-dollar, inline-parentheses, block-dollar, block-square-brackets
 ;; Defaults to "inline-dollar,block-dollar" to follow GitHub's behavior.
 ;MATH_CODE_BLOCK_DETECTION =
-;;
 
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