fix: jira api key (#194)

Author: anuragts

tools/toolkits/jira.mdx

@@ -15,7 +15,7 @@ pip install -U jira
 ```shell
 export JIRA_SERVER_URL="YOUR_JIRA_SERVER_URL"
 export JIRA_USERNAME="YOUR_USERNAME"
-export JIRA_API_TOKEN="YOUR_API_TOKEN"
+export JIRA_TOKEN="YOUR_API_TOKEN"
 ```
 
 ## Example