fix mypy problems

src/read_sequencing/cli.py

 """Command Line Interface."""
 
 import argparse
-from read_sequencing import read_sequencing
+from src.read_sequencing import read_sequencing
 
 
 def parse_args() -> argparse.Namespace:
@@ -39,7 +39,7 @@ def main() -> None:
     Runs the functions read_sequencing.
     """
     args = parse_args()
-    read_sequencing(frag_file_name=args.frag_file_name,
+    read_sequencing.read_sequencing(frag_file_name=args.frag_file_name,
                     output_file_name=args.output_file_name,
                     num_reads=args.num_reads,
                     read_len=args.read_len)