Fix storm smtp html methods (SYN-4539)

[vEpiphyte]

No description provided.

[codecov]

Codecov Report

Base: 97.19% // Head: 97.09% // Decreases project coverage by -0.09% ⚠️

Coverage data is based on head (ce94767) compared to base (8bb9b4d).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2955      +/-   ##
==========================================
- Coverage   97.19%   97.09%   -0.10%     
==========================================
  Files         216      216              
  Lines       42456    42441      -15     
==========================================
- Hits        41264    41207      -57     
- Misses       1192     1234      +42     

Flag	Coverage Δ
linux	97.09% <ø> (+<0.01%)	⬆️
linux_replay	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
synapse/lib/stormlib/smtp.py	100.00% <ø> (+4.34%)	⬆️
synapse/tests/utils.py	94.46% <0.00%> (-1.89%)	⬇️
synapse/cortex.py	96.50% <0.00%> (-0.57%)	⬇️
synapse/lib/hiveauth.py	96.01% <0.00%> (-0.48%)	⬇️
synapse/lib/oauth.py	98.68% <0.00%> (-0.44%)	⬇️
synapse/lib/trigger.py	95.01% <0.00%> (-0.39%)	⬇️
synapse/lib/view.py	97.00% <0.00%> (-0.34%)	⬇️
synapse/cmds/cron.py	97.56% <0.00%> (-0.25%)	⬇️
synapse/lib/jsonstor.py	98.32% <0.00%> (-0.24%)	⬇️
synapse/axon.py	98.73% <0.00%> (-0.15%)	⬇️
... and 12 more

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