Update comments.json (#18822)

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### <samp>🤖 Generated by Copilot at 3389126</samp>

Improved the Slovak translation of the Ghost blog demo by adding a
fictional author name and correcting a grammar error in `comments.json`.

ghost/i18n/locales/sk/comments.json

@@ -33,7 +33,7 @@
     "Head of Marketing at Acme, Inc": "Vedúci marketingu v spoločnosti Acme, Inc",
     "Hide": "Skryť",
     "Hide comment": "Skryť komentár",
-    "Jamie Larson": "",
+    "Jamie Larson": "Jamie Larson",
     "Join the discussion": "Zapojiť sa do diskusie",
     "Just now": "Teraz",
     "Local resident": "Miestny obyvateľ",
@@ -42,7 +42,7 @@
     "Neurosurgeon": "Neurogirurg",
     "One day ago": "Včera",
     "One hour ago": "Pred hodinou",
-    "One minute ago": "Pred minútov",
+    "One minute ago": "Pred minútou",
     "One month ago": "Pred mesiacom",
     "One week ago": "Pred týždňom",
     "One year ago": "Pred rokom",