typo: wich -> which

process/process_windows.go

@@ -400,7 +400,7 @@ func (p *Process) TimesWithContext(ctx context.Context) (*cpu.TimesStat, error)
 	}
 
 	// User and kernel times are represented as a FILETIME structure
-	// wich contains a 64-bit value representing the number of
+	// which contains a 64-bit value representing the number of
 	// 100-nanosecond intervals since January 1, 1601 (UTC):
 	// http://msdn.microsoft.com/en-us/library/ms724284(VS.85).aspx
 	// To convert it into a float representing the seconds that the