Recent changes added support for filename .curlrc on Windows, and
when it's not found curl falls back on the original Windows filename
_curlrc. _curlrc was removed from the doc, however it is still valid.
Closes https://github.com/curl/curl/pull/8382
6) Windows: "%USERPROFILE%\\Application Data\\.curlrc"
-7) Non-windows: use getpwuid to find the home directory
+7) Non-Windows: use getpwuid to find the home directory
-8) On windows, if it finds no .curlrc file in the sequence described above, it
+8) On Windows, if it finds no .curlrc file in the sequence described above, it
checks for one in the same dir the curl executable is placed.
+On Windows two filenames are checked per location: .curlrc and _curlrc,
+preferring the former. Older versions on Windows checked for _curlrc only.
+
This option can be used multiple times to load multiple config files.