update doc/*/scripting/builtins/libtime.md

doc/en/scripting/builtins/libtime.md

@@ -1,13 +1,21 @@
-# *time* library
+# *time* Library
 
-```python
-time.uptime() -> float
+```lua
+-- Returns the time since engine startup in seconds and milliseconds.
+time.uptime() -> number
+
+-- Returns the time delta in seconds and milliseconds (time elapsed since the previous frame)
+time.delta() -> number
+
+-- Returns UTC time in seconds
+time.utc_time() -> int
+
+-- Returns local (system) time in seconds
+time.local_time() -> int
+
+-- Returns the local time offset from UTC in seconds
+time.utc_offset() -> int
+
+-- Returns high-precision time in seconds (elapsed since the engine startup).
+time.precise_time() -> number
 ```
-
-Returns time elapsed since the engine started.
-
-```python
-time.delta() -> float
-```
-
-Returns time elapsed since the last frame.