Fix typos by codespell (#7600)

# Description

Found via `codespell -S target -L
crate,ser,numer,falsy,ro,te,nd,bu,ndoes,statics,ons,fo,rouge,pard`

# User-Facing Changes

None.

# Tests + Formatting

None and done.

# After Submitting

None.

crates/nu_plugin_python/nu_plugin_python_example.py

@@ -8,7 +8,7 @@
 # To register the plugin use:
 # 	register <path-to-py-file>
 #
-# Be carefull with the spans. Miette will crash if a span is outside the
+# Be careful with the spans. Miette will crash if a span is outside the
 # size of the contents vector. For this example we are using 0 and 1, which will
 # point to the beginning of the contents vector. We strongly suggest using the span
 # found in the plugin call head