Corrected a spelling mistake - "log" vs. "long" (#32894)

Author: keenan137

docs/core/diagnostics/dotnet-trace.md

@@ -60,7 +60,7 @@ The `dotnet-trace` tool:
 
 - **`--duration`**
 
-  How log to run the trace. `--duration 00:00:00:05` will run it for 5 seconds.
+  How long to run the trace. `--duration 00:00:00:05` will run it for 5 seconds.
 
 ## Commands