fix: Updated README to have correct selector

[smacpherson64]

What:
Fixed a minor error in the README

Why:
The error is confusing in the README

How:
Changed the svg selector from html-element and replaced with svg-element

Checklist:

• Documentation
• Tests N/A
• Updated Type Definitions N/A
• Ready to be merged
• Added myself to contributors table N/A

[codecov-io]

Codecov Report

Merging #43 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #43   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files          13     13           
  Lines         113    113           
  Branches       24     24           
=====================================
  Hits          113    113

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[gnapse]

🎉 This PR is included in version 1.11.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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