Update src/content/docs/stream/transform-videos/index.mdx

Co-authored-by: ToriLindsay <[email protected]>

Author: bkrebsbach

src/content/docs/stream/transform-videos/index.mdx

@@ -121,7 +121,7 @@ Specifies the filename to use in the returned Content-Disposition header. If not
 
 - Acceptable values:
   - Maximum of 120 characters in length.
-  - Can only contain lowercase letters (a-z), numbers (0-9), hyphens (-), and underscores (\_) plus an optional extension. A valid name satisfies this regular expression: `^[a-zA-Z0-9-_]+.?[a-zA-Z0-9-_]+$`.
+  - Can only contain lowercase letters (a-z), numbers (0-9), hyphens (-), underscores (\_), and an optional extension. A valid name satisfies this regular expression: `^[a-zA-Z0-9-_]+.?[a-zA-Z0-9-_]+$`.
 - Examples: `default.mp4`, `shortened-clip_5s`
 
 ## Source video requirements