Remove the @anchor{} tags that are not referenced in the
documentation.
Change-Id: Ia8e9f75afb08e08ef99d0c8fd82115d689e4a267
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7270
Tested-by: jenkins