Fix contribution guidelines link

Author: naveensingh

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -26,7 +26,7 @@ body:
           required: true
         - label: "This issue contains only one bug."
           required: true
-        - label: "I have read and understood the [contribution guidelines](https://github.com/FossifyOrg/Clock/CONTRIBUTING.md)."
+        - label: "I have read and understood the [contribution guidelines](https://github.com/FossifyOrg/Clock/blob/master/CONTRIBUTING.md)."
           required: true
 
   - type: input

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -24,7 +24,7 @@ body:
           required: true
         - label: "This issue contains only one feature request."
           required: true
-        - label: "I have read and understood the [contribution guidelines](https://github.com/FossifyOrg/Clock/CONTRIBUTING.md)."
+        - label: "I have read and understood the [contribution guidelines](https://github.com/FossifyOrg/Clock/blob/master/CONTRIBUTING.md)."
           required: true
         - label: "I optionally [donated](https://fossify.org/donate) to support the Fossify mission."
           required: false

.github/PULL_REQUEST_TEMPLATE.md

@@ -25,4 +25,4 @@
 - 
 
 #### Acknowledgement
-- [ ] I read the [contribution guidelines](https://github.com/FossifyOrg/Clock/CONTRIBUTING.md).
+- [ ] I read the [contribution guidelines](https://github.com/FossifyOrg/Clock/blob/master/CONTRIBUTING.md).