chore: Merge from @martinthomson's rfc-txt-html

[larseggert]

No description provided.

[codecov]

Codecov Report

Merging #6023 (097cefc) into main (09f3477) will decrease coverage by 0.04%.
The diff coverage is 88.23%.

@@            Coverage Diff             @@
##             main    #6023      +/-   ##
==========================================
- Coverage   88.67%   88.64%   -0.04%     
==========================================
  Files         288      288              
  Lines       40001    40004       +3     
==========================================
- Hits        35471    35461      -10     
- Misses       4530     4543      +13     

Impacted Files	Coverage Δ
ietf/doc/views_stats.py	74.80% <ø> (ø)
ietf/group/urls.py	100.00% <ø> (ø)
ietf/group/views.py	90.61% <ø> (+0.08%)	⬆️
ietf/ietfauth/widgets.py	84.61% <ø> (ø)
ietf/submit/views.py	84.60% <ø> (ø)
ietf/nomcom/views.py	92.90% <33.33%> (-0.22%)	⬇️
ietf/doc/utils.py	87.15% <100.00%> (+0.01%)	⬆️
ietf/doc/views_status_change.py	93.38% <100.00%> (ø)
ietf/nomcom/templatetags/nomcom_tags.py	70.83% <100.00%> (+3.64%)	⬆️
ietf/person/views.py	77.77% <100.00%> (ø)
... and 1 more

... and 4 files with indirect coverage changes