fixing macd and a few others

[andrewkenreich]

Description

fix #2963 - changes legend size here to fit better on macd and a few others - I haven't tested this when a user changes their stuff

• Summary of the change / bug fix.
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How has this been tested?

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Checklist:

• Update our Hugo documentation following these guidelines.
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Others

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[jmaslek]

MACD nice: