add docs to weight function

Author: aadimator

src/NetMSA.jl

@@ -182,13 +182,15 @@ end
 Return the weight of the row, calculated as:
 
 ```math
-$w(r) =  \begin{equation*}
+\begin{aligned}
+w(r) =  \begin{equation*}
 \begin{cases}
   w_1  \times  \frac{x}{c}; & \text{ if r is not aligned}   \\
   w_2  \times  \frac{n_s}{c}; & \text{ if r is aligned}   \\
   w_3; & \text{ if r is full}   \\
 \end{cases}
-\end{equation*}$
+\end{equation*}
+\end{aligned}
 ```
 where n_s is the number of occurrences of the symbol s in the aligned row r,
 and c is the total number of columns in the row. The value of x is equal to zero
@@ -346,14 +348,14 @@ function rowalignment(r, M)
       end
 
       if score > gvalue
-        gvalue = score;
+                gvalue = score;
         g = deepcopy(p);
         g.best = getposition(t, N[t, :], p.value);
         g.bestvalue = score;
       end
 
 
-#       display(p)
+        #       display(p)
 
     end
     end