canonicalize-issue-links.md: improve readability

Author: tshepang

src/triagebot/canonicalize-issue-links.md

@@ -1,6 +1,7 @@
 # Canonicalize Issue Links
 
-GitHub permits having automatic action like `Fixes #123` which closes the issue number `123`, this handler updates the pull-request description with the canonicalized version, `Fixes org/repo#123`.
+GitHub permits having automatic action like `Fixes #123`, which closes the issue number `123`.
+This handler updates the pull-request description with the canonicalized version, `Fixes org/repo#123`.
 
 This is useful when updating subtrees into the upstream repository as it avoids referencing and closing the issue from the upstream repository instead of the one from the subtree.