docs: add document for JSONRPC API (#1027)

* docs: add document for module XDPoS

* docs: add document for module admin

* docs: add document for module debug

* docs: add document for module eth

* docs: add document for module miner

* docs: add document for module net

* docs: add document for module personal

* docs: add document for module rpc

* docs: remove module shh

* docs: add document for module txpool

README.md

@@ -52,11 +52,15 @@ The contract is very strict in handing out penalty for invalid KYC, it results l
 For eg. say A proposes condidates B,C,D by paying for its proposal cost.
 If at a later stage if some predecided amount of owners ( investors ) vote that a KYC for a A is invalid then A & all of its candidates (B,C,D) will lose their position & all their funds will be lost ( will remain with contract wallet ).  
 
+### Documents
+
+[Document](./docs/README.md)
+
 ### For developers
 
 #### Continues integration & delivery
-See https://github.com/XinFinOrg/XDPoSChain/tree/dev-upgrade/cicd
 
+See <https://github.com/XinFinOrg/XDPoSChain/tree/dev-upgrade/cicd>
 
 ### To contribute
 

docs/README.md

@@ -1,3 +1,4 @@
 # Documents
 
+- [JSONRPC API](./xdc/jsonrpc.md)
 - [Validator Contract](./xdc/validator.md)