✏ Fix link in docs to datetime.strptime()

[Kobu]

Issue:
Documentation claims formats receives a list of strings with the date formats that would be passed to datetime.strptime() however the actual link is pointing to date.strftime() as can be seen here

Fix
Replaced the incorrect link by one thats pointing to datetime.strptime()

[tiangolo]

Good catch, thanks @Kobu! 🚀

[codecov]

Codecov Report

Base: 96.24% // Head: 100.00% // Increases project coverage by +3.75% 🎉

Coverage data is based on head (d147826) compared to base (1e43c6b).
Patch has no changes to coverable lines.

❗ Current head d147826 differs from pull request most recent head 9df9562. Consider uploading reports for the commit 9df9562 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           master      #464      +/-   ##
===========================================
+ Coverage   96.24%   100.00%   +3.75%     
===========================================
  Files         280       280              
  Lines        5942      5942              
===========================================
+ Hits         5719      5942     +223     
+ Misses        223         0     -223     

Impacted Files	Coverage Δ
typer/models.py	100.00% <0.00%> (+2.41%)	⬆️
typer/core.py	100.00% <0.00%> (+7.87%)	⬆️
typer/_completion_shared.py	100.00% <0.00%> (+25.24%)	⬆️
typer/completion.py	100.00% <0.00%> (+31.42%)	⬆️
typer/_completion_click8.py	100.00% <0.00%> (+60.55%)	⬆️
typer/_completion_click7.py	100.00% <0.00%> (+78.30%)	⬆️

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[github-actions]

📝 Docs preview for commit 9df9562 at: https://6366735b193dc17614e9c871--typertiangolo.netlify.app