Fix typo in .golangci.yml (#14933)

occured -> occurred
2021-03-09 17:38:18 +09:00 · 2021-03-09 17:38:18 +09:00 · 5b94a07ab5
--- a/.golangci.yml
+++ b/.golangci.yml
@ -26,7 +26,7 @@ linters-settings:
  gocritic:
    disabled-checks:
      - ifElseChain
-      - singleCaseSwitch # Every time this occured in the code, there  was no other way.
+      - singleCaseSwitch # Every time this occurred in the code, there  was no other way.
 issues:
  exclude-rules: