fix typo

pkgs/nix_templater/replace.py

@@ -1,7 +1,7 @@
 import sys
 from pathlib import Path
 
-tempalte_file = sys.argv[1]
+template_file = sys.argv[1]
 magic_string = sys.argv[2]
 outfile = sys.argv[3]
 
@@ -9,7 +9,7 @@ if Path(outfile).exists():
     print(f"{outfile} already exists, aborting")
     sys.exit(1)
 
-template_bytes = Path(tempalte_file).read_bytes()
+template_bytes = Path(template_file).read_bytes()
 loc = 0
 output = b""