fix flake complaint about missing new line

add homepage_url to .shed.yml

Author: fubar2

tools/fasta_compute_length/.shed.yml

@@ -9,4 +9,5 @@ long_description: |
 name: fasta_compute_length
 owner: devteam
 remote_repository_url: https://github.com/galaxyproject/tools-devteam/tree/master/tools/fasta_compute_length
+homepage_url: https://github.com/galaxyproject/tools-devteam/tree/master/tools/fasta_compute_length
 type: unrestricted

tools/fasta_compute_length/fasta_compute_length.py

@@ -4,6 +4,7 @@
 """
 
 import sys
+
 from utils.fasta_to_len import compute_fasta_length