add more processor documentation

src/content/docs/processors/time/sleep.md

@@ -0,0 +1,18 @@
+---
+title: Sleep
+sidebar:
+    order: 1
+---
+The `time.sleep` processor will sleep for the specified `duration` in milliseconds before passing the message to the next processor.
+
+- **type**: `time.sleep`
+- **params**:
+    - **duration**: the duration to sleep in milliseconds
+
+### Example
+This would sleep for 5 seconds before passing the message to the next processor.
+```
+- type: time.sleep
+  params:
+    duration: 5000
+```