更新 UUID.md

UUID.md

@@ -10,6 +10,7 @@ https://unpkg.com/uuidv7@1.0.2/dist/index.js
 
 https://priver.dev/blog/postgres/implementing-v7-uuid-in-postgres/#:~:text=We%20use%20clock_timestamp%20to%20obtain%20the%20current%20time%2C,millisecond%20timestamp%20to%20a%20byte%20sequence%20using%20int8send.
 
+``` sql
 CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
 
 create or replace function uuid_generate_v7()
@@ -30,7 +31,7 @@ select encode(
 $$
 language SQL
 volatile;
-
+```
 
 3.Extract Timestamp from UUID v7 using Javascript
 
@@ -39,6 +40,8 @@ https://park.is/blog_posts/20240803_extracting_timestamp_from_uuid_v7/
 // extract Unix timestamp from a UUID v7 value without an external library
 
 在没有外部库的情况下从 UUID v7 值中提取 Unix 时间戳
+
+``` javascript
 function extractTimestampFromUUIDv7(uuid: string): Date {
   // split the UUID into its components
   const parts = uuid.split("-");
@@ -62,4 +65,6 @@ const timestamp = extractTimestampFromUUIDv7(uuid);
 
 // check output
 console.log(timestamp);
-// prints "Sat Aug 03 2024 07:09:56 GMT-0500 (Central Daylight Time)"
+// prints "Sat Aug 03 2024 07:09:56 GMT-0500 (Central Daylight Time)"
+
+```