[AIRFLOW-XXXX] Remove trailing slash of JIRA issue link (#7155)
[AIRFLOW-XXXX] Remove trailing slash of JIRA issue link (#7155)

Trailing slash causes weird problem. When you enter the issue
via this link, your URL in browser gets updated to an empty one
which results in Error Page when you resolve the ticket.
apache/airflow,bolkedebruin/airflow,mistercrunch/airflow,spektom/incubator-airflow,wooga/airflow,cfei18/incubator-airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,apache/incubator-airflow,airbnb/airflow,dhuang/incubator-airflow,danielvdende/incubator-airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,wileeam/airflow,sekikn/incubator-airflow,dhuang/incubator-airflow,sekikn/incubator-airflow,DinoCow/airflow,airbnb/airflow,nathanielvarona/airflow,bolkedebruin/airflow,DinoCow/airflow,dhuang/incubator-airflow,airbnb/airflow,mrkm4ntr/incubator-airflow,mrkm4ntr/incubator-airflow,apache/airflow,DinoCow/airflow,mtagle/airflow,Acehaidrey/incubator-airflow,danielvdende/incubator-airflow,spektom/incubator-airflow,wooga/airflow,mtagle/airflow,mistercrunch/airflow,danielvdende/incubator-airflow,mtagle/airflow,danielvdende/incubator-airflow,nathanielvarona/airflow,wileeam/airflow,cfei18/incubator-airflow,mtagle/airflow,mistercrunch/airflow,Acehaidrey/incubator-airflow,wooga/airflow,airbnb/airflow,apache/airflow,lyft/incubator-airflow,nathanielvarona/airflow,sekikn/incubator-airflow,lyft/incubator-airflow,cfei18/incubator-airflow,cfei18/incubator-airflow,nathanielvarona/airflow,cfei18/incubator-airflow,cfei18/incubator-airflow,wileeam/airflow,nathanielvarona/airflow,apache/airflow,apache/incubator-airflow,bolkedebruin/airflow,sekikn/incubator-airflow,mrkm4ntr/incubator-airflow,DinoCow/airflow,wileeam/airflow,mistercrunch/airflow,lyft/incubator-airflow,Acehaidrey/incubator-airflow,bolkedebruin/airflow,wooga/airflow,Acehaidrey/incubator-airflow,lyft/incubator-airflow,spektom/incubator-airflow,bolkedebruin/airflow,apache/airflow,apache/airflow,mrkm4ntr/incubator-airflow,apache/incubator-airflow,spektom/incubator-airflow,dhuang/incubator-airflow,Acehaidrey/incubator-airflow,apache/incubator-airflow