Update H69 to address issue #1270

[fstrr]

• add reference to H97
• make links more descriptive inline with other Technique documents

Closes #1270

[patrickhlauke]

@fstrr a heads-up: if you include Closes #XXXX in the first comment on the pull request, github will automagically tie the issue and PR together so when this is merged, it auto-closes the issue as well

[mbgower]

@michael-n-cooper i thought these complementary references were added automatically. Or is this a case where just because the list techniques cites the heading, it doesn't mean we need to have the heading citing the list technique? I do think that it's a weaker association going in this direction...

[alastc]

@fstrr could you check the "Resolve conflicts" on this PR please?

I assume the conflicts come from your technique updates, so you can probably spot which bits are new more easily than I can...

[fstrr]

@alastc Tis done.