Update README.md

[dalonsoa]

Description

The RSE Team has recently change its webpage address. This PR simply updates the README to the correct URL.

Fixes # None

Type of change

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist

• Make sure you've run the pre-commit checks: $ pre-commit run -a
• All tests pass: $ poetry run pytest

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[davidorme]

LGTM

[davidorme]

LGTM - again. This time, remembering to make this an approval not a comment.

[codecov-commenter]

Codecov Report

Merging #111 (bd033db) into develop (4abb60f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop     #111   +/-   ##
========================================
  Coverage    96.35%   96.35%           
========================================
  Files           10       10           
  Lines          412      412           
========================================
  Hits           397      397           
  Misses          15       15           

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