Fix TCP high-water release note

Add missing GitLab issue number to the TCP high-water release note.

(cherry picked from commit d0a3273d)
65 jobs for !2544 with 1206-fix-tcp-high-water-release-note-v9_11 in 1 minute and 52 seconds (queued for 5 seconds)
detached
Status Job ID Name Coverage
  Precheck
passed #401545
amd64 linux
🐞:sid:amd64

00:01:04

passed #401543
amd64 linux
autoreconf:sid:amd64

00:00:51

passed #401544
amd64 linux
misc:sid:amd64

00:00:24

 
  Build
canceled #401558
amd64 linux
asan:sid:amd64

canceled #401563
amd64 freebsd
clang:freebsd11.3:amd64

canceled #401564
amd64 freebsd
clang:freebsd12.0:amd64

canceled #401565
amd64 openbsd
clang:openbsd6.5:amd64

canceled #401559
amd64 linux
clang:stretch:amd64

canceled #401560
i386 linux
clang:stretch:i386

canceled #401546
amd64 linux
gcc:alpine3.10:amd64

canceled #401557
amd64 linux
gcc:bionic:amd64

canceled #401552
amd64 linux
gcc:buster:amd64

canceled #401547
amd64 linux
gcc:centos6:amd64

canceled #401548
amd64 linux
gcc:centos7:amd64

canceled #401549
amd64 linux
gcc:centos8:amd64

canceled #401555
amd64 linux
gcc:fedora30:amd64

canceled #401550
amd64 linux
gcc:jessie:amd64

canceled #401553
amd64 linux
gcc:sid:amd64

canceled #401554
i386 linux
gcc:sid:i386

canceled #401551
amd64 linux
gcc:stretch:amd64

canceled #401556
amd64 linux
gcc:xenial:amd64

canceled #401567
amd64 windows
msvc:windows:amd64

canceled #401561
amd64 linux
nocrypto:sid:amd64

canceled #401566
amd64 linux
nolibtool:sid:amd64

canceled #401562
amd64 linux
pkcs11:sid:amd64

 
  Unit
skipped #401580
amd64 linux
unit:asan:sid:amd64
skipped #401584
amd64 freebsd
unit:clang:freebsd11.3:amd64
skipped #401585
amd64 freebsd
unit:clang:freebsd12.0:amd64
skipped #401581
amd64 linux
unit:clang:stretch:amd64
skipped #401568
amd64 linux
unit:gcc:alpine3.10:amd64
skipped #401579
amd64 linux
unit:gcc:bionic:amd64
skipped #401574
amd64 linux
unit:gcc:buster:amd64
skipped #401569
amd64 linux
unit:gcc:centos6:amd64
skipped #401570
amd64 linux
unit:gcc:centos7:amd64
skipped #401571
amd64 linux
unit:gcc:centos8:amd64
skipped #401577
amd64 linux
unit:gcc:fedora30:amd64
skipped #401572
amd64 linux
unit:gcc:jessie:amd64
skipped #401575
amd64 linux
unit:gcc:sid:amd64
skipped #401576
i386 linux
unit:gcc:sid:i386
skipped #401573
amd64 linux
unit:gcc:stretch:amd64
skipped #401578
amd64 linux
unit:gcc:xenial:amd64
skipped #401582
amd64 linux
unit:nocrypto:sid:amd64
skipped #401586
amd64 linux
unit:nolibtool:sid:amd64
skipped #401583
amd64 linux
unit:pkcs11:sid:amd64
 
  System
skipped #401599
amd64 linux
system:asan:sid:amd64
skipped #401602
amd64 freebsd
system:clang:freebsd11.3:amd64
skipped #401603
amd64 freebsd
system:clang:freebsd12.0:amd64
skipped #401587
amd64 linux
system:gcc:alpine3.10:amd64
skipped #401598
amd64 linux
system:gcc:bionic:amd64
skipped #401593
amd64 linux
system:gcc:buster:amd64
skipped #401588
amd64 linux
system:gcc:centos6:amd64
skipped #401589
amd64 linux
system:gcc:centos7:amd64
skipped #401590
amd64 linux
system:gcc:centos8:amd64
skipped #401596
amd64 linux
system:gcc:fedora30:amd64
skipped #401591
amd64 linux
system:gcc:jessie:amd64
skipped #401594
amd64 linux
system:gcc:sid:amd64
skipped #401595
i386 linux
system:gcc:sid:i386
skipped #401592
amd64 linux
system:gcc:stretch:amd64
skipped #401597
amd64 linux
system:gcc:xenial:amd64
skipped #401600
amd64 linux
system:nocrypto:sid:amd64
skipped #401604
amd64 linux
system:nolibtool:sid:amd64
skipped #401601
amd64 linux
system:pkcs11:sid:amd64
 
  Docs
passed #401605
amd64 linux
docs:sid:amd64

00:00:59

 
  Postcheck
skipped #401607
amd64 linux
cppcheck:gcc:sid:amd64
canceled #401606
amd64 linux
scan-build:buster:amd64