doc: fix typos

Co-authored-by: Ragnar <rodiondenmark@gmail.com>
Co-authored-by: VolodymyrBg <aqdrgg19@gmail.com>

contrib/macdeploy/gen-sdk

@@ -54,7 +54,7 @@ def run():
         out_sdktgz_path = pathlib.Path("./{}.tar.gz".format(out_name))
 
     def tarfp_add_with_base_change(tarfp, dir_to_add, alt_base_dir):
-        """Add all files in dir_to_add to tarfp, but prepent alt_base_dir to the files'
+        """Add all files in dir_to_add to tarfp, but prepend alt_base_dir to the files'
         names
 
         e.g. if the only file under /root/bazdir is /root/bazdir/qux, invoking: