Update file.mdx (#116)

adding -file flag in examples

Author: fail-open

templates/protocols/file.mdx

@@ -105,12 +105,12 @@ file:
 
 ```bash
 # Running file template on http-response/ directory
-nuclei -t file.yaml -target http-response/
+nuclei -t file.yaml -file -target http-response/
 
 # Running file template on output.txt
-nuclei -t file.yaml -target output.txt
+nuclei -t file.yaml -file -target output.txt
 ```
 
 <Tip>
 More complete examples are provided [here](/templates/protocols/file-examples)
-</Tip>
+</Tip>