Update README.md

README.md

@@ -47,7 +47,7 @@ INPUT6=AFG6_444.bam.bga
 
 OUTPUT=Mmm_AFG.combined.bga
 
-unionBedGraphs -i $INPUT1 $INPUT2 $INPUT3 $INPUT4 $INPUT5 $INPUT6 | awk -v OFS='\t' 'BEGIN {sum=0} {for (i=4: i<=NF; i++) sum+=$1; print $1,$2,$3,sum; sum=0}' > $OUTPUT
+unionBedGraphs -i $INPUT1 $INPUT2 $INPUT3 $INPUT4 $INPUT5 $INPUT6 | awk -v OFS='\t' 'BEGIN {sum=0} {for (i=4; i<=NF; i++) sum+=$i; print $1,$2,$3,sum; sum=0}' > $OUTPUT
 ```
 
 get masking region example for the population _Mus musculus musculus AFG_: