Rename buildFormat to buildPythonDateTimeFormat for improved readability and specificity.

Author: DmitryNekrasov

benchmarks/src/jmh/kotlin/ParserStructureConcatBenchmark.kt

@@ -22,7 +22,7 @@ import java.util.concurrent.*
 open class ParserStructureConcatBenchmark {
 
     @Benchmark
-    fun buildFormat(blackhole: Blackhole) {
+    fun buildPythonDateTimeFormat(blackhole: Blackhole) {
         val v = LocalDateTime.Format {
             year()
             char('-')