newline fixes

Author: mRrvz

doc/pairs.md

@@ -43,7 +43,8 @@ tuples
 
 ## ``use_tomap`` parameter
 
-With ``use_tomap`` flag, you can choose to iterate over objects or over tuples. If ``use_tomap = true``, you will iterate over objects. This parameter is false by default.
+With ``use_tomap`` flag, you can choose to iterate over objects or over tuples.  
+If ``use_tomap = true``, you will iterate over objects. This parameter is false by default.
 
 **Example:**