Merge #16441: build: remove qt libjpeg check from bitcoin_qt.m4

f509e3b8ce doc: remove line numbers from qt package links (fanquake)
1bb1661a40 doc: fix typo in bitcoin_qt.m4 comment (fanquake)
0aeb98ac1f build: remove jpeg lib check from bitcoin_qt.m4 (fanquake)
98a64bd296 build: disable libjpeg in qt (fanquake)

Pull request description:

  When gitian building on Windows I'm seeing:
  ```bash
  checking for Qt 5... yes
  checking for > Qt 5.7... yes
  checking for main in -limm32... yes
  checking for main in -lz ... yes
  checking for library containing jpeg_create_decompress ... configure: WARNING: libjpeg not found. Assuming qt has it built-in
  no
  checking for library containing png_error ... -lqtlibpng
  checking for library containing pcre2_match_16... -lqtpcre2
  checking for library containing hb_ot_tags_from_script ... -lqtharfbuzz
  ```

  We are passing `-qt-libjpeg` to Qt:
  https://github.com/bitcoin/bitcoin/blob/e6e99d4f757f2e5052f0cc68951c75e91e4753e3/depends/packages/qt.mk#L66
  but I dont think we are doing anything with `jpeg` related regardless?

ACKs for top commit:
  laanwj:
    ACK f509e3b8ce
  promag:
    ACK f509e3b8ce.

Tree-SHA512: 61ea20c11df11b9d426644df9a01aac12b76897003121a283fc784a8c30e9b5ad34c9805069fec20926f7aa279e59528e2e13697a944a22760c3acb6366fffbe

depends/packages/qt.mk

@@ -39,6 +39,7 @@ $(package)_config_opts += -no-ico
 $(package)_config_opts += -no-iconv
 $(package)_config_opts += -no-kms
 $(package)_config_opts += -no-linuxfb
+$(package)_config_opts += -no-libjpeg
 $(package)_config_opts += -no-libudev
 $(package)_config_opts += -no-mtdev
 $(package)_config_opts += -no-openvg
@@ -64,7 +65,6 @@ $(package)_config_opts += -pch
 $(package)_config_opts += -pkg-config
 $(package)_config_opts += -prefix $(host_prefix)
 $(package)_config_opts += -qt-libpng
-$(package)_config_opts += -qt-libjpeg
 $(package)_config_opts += -qt-pcre
 $(package)_config_opts += -qt-harfbuzz
 $(package)_config_opts += -system-zlib