Add examples section to advanced help dialogue

[louise-davies]

Description

Adds an example section to the advanced help dialogue. This section appears as the first section, but only if the examples array both exists and has at least 1 example in it.

Also fixed that the dialogue title wasn't using the translation string

Testing instructions

Add a set up instructions describing how the reviewer should test the code

• Review code
• Check Actions build
• Review changes to test coverage

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.27%. Comparing base (bae84ca) to head (dcb2e1d).
Report is 3 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #1703   +/-   ##
========================================
  Coverage    95.26%   95.27%           
========================================
  Files          183      183           
  Lines         8010     8014    +4     
  Branches      2569     2578    +9     
========================================
+ Hits          7631     7635    +4     
  Misses         343      343           
  Partials        36       36           

Flag	Coverage Δ
common	94.07% <ø> (ø)
dataview	97.31% <ø> (ø)
download	95.86% <ø> (ø)
search	93.50% <100.00%> (+0.02%)	⬆️

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[joelvdavies]

LGTM