added deno usage

apps/yt-dlp.md

@@ -1,3 +1,4 @@
+## Install
 ### Install yt-dlp
 ```
 curl -L https://github.com/yt-dlp/yt-dlp/releases/latest/download/yt-dlp -o yt-dlp && chmod a+rx yt-dlp 
@@ -11,7 +12,12 @@ sudo apt-get install curl ffmpeg jq
 
 
 
-### Install deno
+## Use deno runtime
+### Install
 ```
 curl -fsSL "https://dl.deno.land/release/$(curl -fsSL https://dl.deno.land/release-latest.txt)/deno-x86_64-unknown-linux-gnu.zip" -o /tmp/deno.zip && unzip -o -j -d . /tmp/deno.zip && chmod +x ./deno && rm -f /tmp/deno.zip
+```
+### Use
+```
+./yt-dlp --js-runtimes deno:./deno 
 ```