Update allele_freq.md

doc/allele_freq.md

@@ -23,13 +23,12 @@ pathx         | 0              | 1              | 0
 pathy         | 0              | 1              | 1
 pathz         | 1              | 0              | 0
 
-Where [number of sequences](/functions/utils.py#L9) is number of rows in a matrix and [number of segregation sites](/functions/utils.py#L15)number of the columns in a matrix.
-The next step is calculate the total number of pairwise differences observed between all sequences.
+Where [number of sequences](/functions/utils.py#L9) is number of rows in a matrix and [number of segregation sites](/functions/utils.py#L15) number of the columns in a matrix.
 
-2. For each row (sequence) I calculate number of occurences of allele, number of times an allele is found. 
+1. For each row (sequence) I calculate number of occurences of allele, number of times an allele is found. 
 
-3. For each row I calculate the sum of number of occurences.
+2. For each row I calculate the sum of number of occurences.
 
-4. Return [allele_freq](/functions/utils.py#L21)
+3. Return [allele_freq](/functions/utils.py#L21)
 
 ![f_A=\frac{n_occurencesallele}{{(totalnumber)}](https://latex.codecogs.com/svg.latex?\Large&space;f_A=\frac{n_occurencesallele}{{(totalnumber)})