Fix typo [minor]
Fix typo [minor]

Fixes "unrecognized character escape sequence" warning from the
Intel compiler.

jmarshall/bedtools2,arq5x/bedtools2,arq5x/bedtools2,jmarshall/bedtools2,arq5x/bedtools2,arq5x/bedtools2,jmarshall/bedtools2,arq5x/bedtools2,jmarshall/bedtools2,jmarshall/bedtools2