Merge pull request #50094 from t-inu/update-ja-owners

Add t-inu to sig-docs-ja-owners

Author: k8s-ci-robot

OWNERS_ALIASES

@@ -127,6 +127,7 @@ aliases:
     - inductor
     - nasa9084
     - Okabe-Junya
+    - t-inu
   sig-docs-ja-reviews: # PR reviews for Japanese content
     - atoato88
     - b1gb4by