Fix based on feedback

Author: brfrn169

core/src/main/java/com/scalar/db/common/CoreError.java

@@ -991,7 +991,7 @@ public enum CoreError implements ScalarDbError {
       "The virtual table must be in the same storage as its source tables. Virtual table: %s; Left source table: %s; Right source table: %s",
       "",
       ""),
-  SOURCE_TABLES_CANNET_BE_DROPPED_WHILE_VIRTUAL_TABLES_EXIST(
+  SOURCE_TABLES_CANNOT_BE_DROPPED_WHILE_VIRTUAL_TABLES_EXIST(
       Category.USER_ERROR,
       "0273",
       "Source tables cannot be dropped while virtual tables depending on them exist. Source table: %s; Virtual tables: %s",

core/src/main/java/com/scalar/db/storage/jdbc/JdbcAdmin.java

@@ -254,7 +254,7 @@ public void dropTable(String namespace, String table) throws ExecutionException
       if (!virtualTableInfos.isEmpty()) {
         // For a source table of virtual tables
         throw new IllegalArgumentException(
-            CoreError.SOURCE_TABLES_CANNET_BE_DROPPED_WHILE_VIRTUAL_TABLES_EXIST.buildMessage(
+            CoreError.SOURCE_TABLES_CANNOT_BE_DROPPED_WHILE_VIRTUAL_TABLES_EXIST.buildMessage(
                 getFullTableName(namespace, table),
                 virtualTableInfos.stream()
                     .map(v -> getFullTableName(v.getNamespaceName(), v.getTableName()))