Rename UpdateTupleAssignment files and update corresponding test method for bulk assignment formatting

Author: xterao

src/test/kotlin/org/domaframework/doma/intellij/formatter/SqlFormatterTest.kt

@@ -114,8 +114,8 @@ class SqlFormatterTest : BasePlatformTestCase() {
         formatSqlFile("UpdateBindVariable.sql", "UpdateBindVariable$formatDataPrefix.sql")
     }
 
-    fun testUpdateTupleAssignmentFormatter() {
-        formatSqlFile("UpdateTupleAssignment.sql", "UpdateTupleAssignment$formatDataPrefix.sql")
+    fun testUpdateBulkAssignmentFormatter() {
+        formatSqlFile("UpdateBulkAssignment.sql", "UpdateBulkAssignment$formatDataPrefix.sql")
     }
 
     fun testDeleteFormatter() {