update readme

README.md

@@ -50,7 +50,7 @@ This part explains the existing cli commands.
         1. keys-file *file path* - Proving system file  
         2. input-hash *hash* - Hash of all public inputs  
 7. r1cs - Builds an r1cs and writes it to a file  
-    Flags:
+    Flags:  
         1. output *file path* - File to be writen to  
         2. tree-depth *n* - Depth of a tree  
         3. batch-size *n* - Batch size for Merkle tree updates