Fix opentelemetry tracker duration recorded values (#66)

Co-authored-by: Brett Beutell <brett@fiberplane.com>

Author: brettimus

src/autometrics/tracker/opentelemetry.py

@@ -123,7 +123,7 @@ def __histogram(
             percentile = latency[1].value
 
         self.__histogram_instance.record(
-            duration * 1000,
+            duration,
             attributes={
                 "function": function,
                 "module": module,