Updated README.md for prescott command.

README.md

@@ -63,7 +63,7 @@ prescott --help
 ```
 Run the program by issuing the following command in a bash terminal:
 ```bash
-prescott -e ../data/MLH1_normPred_evolCombi.txt -g ../data/gnomAD_v2.1.1_MLH1_HUMAN_ENSG00000076242.csv -s ../data/MLH1.fasta 
+prescott -e ../data/MLH1_normPred_evolCombi.txt -g ../data/gnomAD_v4.0.0_MLH1_HUMAN_ENSG00000076242.csv -s ../data/MLH1.fasta
 ```
 The most important output is prescott-scores.txt file, which produces frequecy modified scores for the mutations.