fix typos in pydantic settings module

[kkirsche]

./pydantic_settings/sources.py:50: overrided ==> overridden
./pydantic_settings/sources.py:327: curently ==> currently
./pydantic_settings/main.py:47: bellow ==> below

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (b7478d6) 97.44% compared to head (72b129a) 97.44%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #124   +/-   ##
=======================================
  Coverage   97.44%   97.44%           
=======================================
  Files           5        5           
  Lines         313      313           
  Branches       68       68           
=======================================
  Hits          305      305           
  Misses          6        6           
  Partials        2        2           

Impacted Files	Coverage Δ
pydantic_settings/main.py	100.00% <ø> (ø)
pydantic_settings/sources.py	97.70% <ø> (ø)

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[hramezani]

Thanks @kkirsche