fix database oopsie

Femto.Database/Migrations/20250517195735_InitBlog.sql

@@ -16,7 +16,7 @@ CREATE TABLE blog.post
     content    text        NOT NULL,
     posted_on  timestamptz NOT NULL DEFAULT now(),
     author_id  uuid        NOT NULL REFERENCES blog.author (id) on DELETE CASCADE,
-    is_private bool        NOT NULL DEFAULT false
+    is_public bool        NOT NULL DEFAULT false
 );
 
 CREATE TABLE blog.post_media