fix: example code did not compile due to typos (#11639)

Resolves #11638

Author: ghuntley

docs/fsharp/language-reference/caller-information.md

@@ -24,9 +24,9 @@ open System.Diagnostics
 open System.Runtime.CompilerServices
 
 type Tracer() =
-    member __.DoTrace(msg: string,
+    member __.DoTrace(message: string,
                       [<CallerMemberName>] ?memberName: string,
-                      [<CallerFilePath>] ?path: string
+                      [<CallerFilePath>] ?path: string,
                       [<CallerLineNumber>] ?line: int) =
         Trace.WriteLine(sprintf "Message: %s" message)
         match (memberName, path, line) with
@@ -68,4 +68,4 @@ The following chart shows the member names that are returned when you use the Ca
 
 - [Attributes](attributes.md)
 - [Named arguments](parameters-and-arguments.md#named-arguments)
-- [Optional parameters](parameters-and-arguments.md#optional-parameters)
+- [Optional parameters](parameters-and-arguments.md#optional-parameters)