Fix: Declare strict types

[localheinz]

This pull request

• declares strict types in examples in README.md

[codecov]

Codecov Report

Merging #201 (8b4f88e) into main (819247d) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main     #201   +/-   ##
=========================================
  Coverage     99.13%   99.13%           
  Complexity       35       35           
=========================================
  Files            12       12           
  Lines           116      116           
=========================================
  Hits            115      115           
  Misses            1        1           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 819247d...8b4f88e. Read the comment docs.