Fix typo

bin/git-log-mr

@@ -17,7 +17,7 @@ function merge_request_log_single() {
     # Fetch variables
 
     committers=$(git log --format='%an <%ae>' ${hash}^..${hash} --skip=1)
-    contributors=$(echo "${committers}" | uniq | sort | tr '\n' ', ' | sed s'/.$//' | sed s'/.$//')
+    contributors=$(echo "${committers}" | uniq | sort | tr '\n' ', ')
     num_commits=$(echo "${committers}" | wc -l | tr -d '[:space:]')
     reviewer=$(git show --format='%cn <%ce>' ${hash})
     raw_body=$(git show ${hash} --format='%B' | sed 's/\r$//')