Adding not null to name attribute in the "tag" table

The creation of this table fails due to this typo!

src/main/resources/db/migration/V1__create_tables.sql

@@ -31,7 +31,7 @@ create table follows (
 
 create table tags (
   id varchar(255) primary key,
-  name varchar(255)
+  name varchar(255) not null
 );
 
 create table article_tags (