chore: recommend upgrading in issue template

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -3,9 +3,13 @@ body:
   - 
     attributes: 
       value: |
-          Please check the issues tab to avoid duplicates.
+          Please check the issues tab to avoid duplicates, and 
+          confirm that the bug exists on the latest release (upgrade
+          by running `python3 -m pip install --upgrade slither-analyzer`).
+          
           If you are having difficulty installing slither,
           please head over to the "Discussions" page.
+          
           Thanks for taking the time to fill out this bug report!
     type: markdown
   - 
@@ -17,7 +21,7 @@ body:
       required: true
   - 
     attributes: 
-      description: "It can be a github repo, etherscan link, or code snippet."
+      description: "It can be a github repo (preferred), etherscan link, or code snippet."
       label: "Code example to reproduce the issue:"
       placeholder: "`contract A {}`\n"
     id: reproduce
@@ -27,7 +31,7 @@ body:
   - 
     attributes: 
       description: |
-          What version of slither are you running? 
+          What version of slither are you running?
           Run `slither --version`
       label: "Version:"
     id: version