Remove redundant bracket in fstring reference

[codecov-commenter]

Codecov Report

Merging #383 (e5bb4e4) into master (36cba29) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #383   +/-   ##
=======================================
  Coverage   67.30%   67.30%           
=======================================
  Files         123      123           
  Lines        7491     7491           
=======================================
  Hits         5042     5042           
  Misses       2449     2449           

Impacted Files	Coverage Δ
...ally/views/reports/administrative_areas_reports.py	33.43% <ø> (ø)

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more

[lincmba]

f string is much neater that .format and it uses less variables