SE-2176 Update doc comments for accuracy

Description

  • provide example of html escaping for the interpolateHtml method

  • fix misleading comments about escaping for StringUtils.interpolate (it
    does not in fact escape anything)

  • update interpolate examples for accuracy and to better represent functionality

  • add a test to show that html is not escaped

*Test instructions*:

*Reviewers*:

  • [ ] @bradenmacdonald

  • [ ] edX reviewers TBD

Assignee

Robert Raposa

Reporter

Open Source Pull Request Bot

Labels

None

Contributor Name

Samuel Walladge

Repo

edx/edx-ui-toolkit

Customer

Epic Link

None

OSCM Assignee

None

Platform Map Area (Levels 1 & 2)

Developer Experiences - Core Platform Requirements

Platform Map Area (Levels 3 & 4)

None

Blended Hour Utilization Percentage

None

Priority

Unset
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