rename deepsleep to deep_sleep_ms for clarity on expected duration

in main deep sleep was larger than required by a factor of 1000, fixed
this an renamed function to make expected duration count size obvious
from the name

rust/src/hal/initial_hal.rs

@@ -104,8 +104,8 @@ impl<'a> BoardInteraction<'a> for Initial<'a> {
         bail!("Please configure board revision")
     }
 
-    async fn deep_sleep(&mut self, duration_in_ms: u64) -> ! {
-        self.esp.deep_sleep(duration_in_ms);
+    async fn deep_sleep_ms(&mut self, duration_in_ms: u64) -> ! {
+        self.esp.deep_sleep_ms(duration_in_ms);
     }
     fn is_day(&self) -> bool {
         false