update

Author: clin99

README.md

@@ -218,14 +218,16 @@ The struct `Constant` records the possible number formats in Verilog
 
 ### Struct NetBit
 The struct `NetBit` specifies a bit in a net
+
 | Name | Type | Description |
 | ------------- |:-------------| :--------------| 
 | name | std::string |  the name of a net   |
 | bit  | int | the index of the bit |
 
 
 ### Struct NetRange
-The struct `NetRange` specifies a range in a net
+The struct `NetRange` specifies a range in a net 
+
 | Name | Type | Description |
 | ------------- |:-------------| :--------------| 
 | name | std::string |  the name of a net   |