Fix example value

Author: pedrosousa

src/content/docs/ruleset-engine/rules-language/fields/http-request-body.mdx

@@ -203,7 +203,7 @@ List of `Content-Disposition` headers for each part in the multipart body.
 
 Example value:
 
-`[["form-data; name=\"username\"], ["form-data;name=\"picture\"]]`
+`[["form-data; name=\"username\""], ["form-data;name=\"picture\""]]`
 
 Example: