doc: specify maxHeaderCount alias for maxHeaderListPairs

Fixes: #32388

PR-URL: #33519
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Zeyu Yang <himself65@outlook.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/api/http2.md

@@ -1991,7 +1991,9 @@ changes:
     queued to be sent, and unacknowledged `PING` and `SETTINGS` frames are all
     counted towards the current limit. **Default:** `10`.
   * `maxHeaderListPairs` {number} Sets the maximum number of header entries.
-    The minimum value is `4`. **Default:** `128`.
+    This is similar to [`http.Server#maxHeadersCount`][] or
+    [`http.ClientRequest#maxHeadersCount`][]. The minimum value is `4`.
+    **Default:** `128`.
   * `maxOutstandingPings` {number} Sets the maximum number of outstanding,
     unacknowledged pings. **Default:** `10`.
   * `maxSendHeaderBlockLength` {number} Sets the maximum allowed size for a
@@ -2127,7 +2129,9 @@ changes:
     queued to be sent, and unacknowledged `PING` and `SETTINGS` frames are all
     counted towards the current limit. **Default:** `10`.
   * `maxHeaderListPairs` {number} Sets the maximum number of header entries.
-    The minimum value is `4`. **Default:** `128`.
+    This is similar to [`http.Server#maxHeadersCount`][] or
+    [`http.ClientRequest#maxHeadersCount`][]. The minimum value is `4`.
+    **Default:** `128`.
   * `maxOutstandingPings` {number} Sets the maximum number of outstanding,
     unacknowledged pings. **Default:** `10`.
   * `maxSendHeaderBlockLength` {number} Sets the maximum allowed size for a
@@ -2241,7 +2245,9 @@ changes:
     queued to be sent, and unacknowledged `PING` and `SETTINGS` frames are all
     counted towards the current limit. **Default:** `10`.
   * `maxHeaderListPairs` {number} Sets the maximum number of header entries.
-    The minimum value is `1`. **Default:** `128`.
+    This is similar to [`http.Server#maxHeadersCount`][] or
+    [`http.ClientRequest#maxHeadersCount`][]. The minimum value is `1`.
+    **Default:** `128`.
   * `maxOutstandingPings` {number} Sets the maximum number of outstanding,
     unacknowledged pings. **Default:** `10`.
   * `maxReservedRemoteStreams` {number} Sets the maximum number of reserved push
@@ -3588,6 +3594,8 @@ following additional properties:
 [`Http2Stream`]: #http2_class_http2stream
 [`ServerHttp2Stream`]: #http2_class_serverhttp2stream
 [`TypeError`]: errors.html#errors_class_typeerror
+[`http.ClientRequest#maxHeadersCount`]: http.html#http_request_maxheaderscount
+[`http.Server#maxHeadersCount`]: http.html#http_server_maxheaderscount
 [`http2.SecureServer`]: #http2_class_http2secureserver
 [`http2.Server`]: #http2_class_http2server
 [`http2.createSecureServer()`]: #http2_http2_createsecureserver_options_onrequesthandler