Docs: Contributing Guide Fix (#873)

* contributing guide

Signed-off-by: Sara <[email protected]>

CONTRIBUTING.rst

@@ -21,10 +21,12 @@ Reporting Bugs
 to produce an incorrect or unexpected result, or to behave in unintended
 ways.
 
-Bugs are tracked as `JIRA
-issues <https://jira.hyperledger.org/projects/IR/issues/IR-275?filter=allopenissues&orderby=issuetype+ASC%2C+priority+DESC%2C+updated+DESC>`__
+Bugs are tracked as `GitHub issues <https://github.com/hyperledger/iroha/issues>` (this is the preferred option) or as `JIRA
+issues <https://jira.hyperledger.org/projects/IR/issues/IR-275?filter=allopenissues&orderby=issuetype+ASC%2C+priority+DESC%2C+updated+DESC>` (if it is convenient to you)__
 in Hyperledger Jira.
 
+If you decide to go with the GitHub issues, just `click on this link <https://github.com/hyperledger/iroha/issues/new>` and follow the instructions in the template.
+
 To submit a bug, `create new
 issue <https://jira.hyperledger.org/secure/CreateIssue.jspa>`__ and
 include these details:
@@ -75,9 +77,12 @@ Suggesting Improvements
 An *improvement* is a code or idea, which makes **existing** code or
 design faster, more stable, portable, secure or better in any other way.
 
-Improvements are tracked as `JIRA
+Improvements are tracked as `GitHub issues <https://github.com/hyperledger/iroha/issues>` (this is the preferred option) or as `JIRA
 improvements <https://jira.hyperledger.org/browse/IR-184?jql=project%20%3D%20IR%20and%20issuetype%20%3D%20Improvement%20ORDER%20BY%20updated%20DESC>`__.
-To submit new improvement, `create new
+
+Again, if you choose GitHub issues, just `click on this link <https://github.com/hyperledger/iroha/issues/new>` and follow the instructions in the template.
+
+To submit a new improvement in JIRA, `create new
 issue <https://jira.hyperledger.org/secure/CreateIssue.jspa>`__ and
 include these details:
 
@@ -113,9 +118,8 @@ community could help you. You can also help others!
 Your First Code Contribution
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Read our `C++ Style Guide <#c-style-guide>`__ and start with
-beginner-friendly issues with JIRA label
-`good-first-issue <https://jira.hyperledger.org/issues/?jql=project%20%3D%20IR%20and%20labels%20%3D%20good-first-issue%20ORDER%20BY%20updated%20DESC>`__.
+Read our `C++ Style Guide <#c-style-guide>`__ and start with checking out `the GitHub board <https://github.com/hyperledger/iroha/projects/1>` or the beginner-friendly issues in JIRA with
+`good-first-issue label <https://jira.hyperledger.org/issues/?jql=project%20%3D%20IR%20and%20labels%20%3D%20good-first-issue%20ORDER%20BY%20updated%20DESC>`__.
 Indicate somehow that you are working on this task: get in touch with
 maintainers team, community or simply assign this issue to yourself.