docs: fix video and audio

docs/src/content/docs/blog/DevLog-2025.03.10.md

@@ -79,7 +79,7 @@ At the end of March 8th, [@LemonNekoGH](https://github.com/LemonNekoGH) and
 colors for the entire stage! (I never thought this could be done within hours...)
 
 <video controls muted>
-  <source src="/static/blog/DevLog-2025.03.10/customizable-theme-colors.mp4">
+  <source src="../../../../static/blog/DevLog-2025.03.10/customizable-theme-colors.mp4">
 </video>
 
 - https://github.com/moeru-ai/airi/pull/53

docs/src/content/docs/blog/DevLog-2025.03.20.mdx

@@ -70,7 +70,7 @@ Here's the first look that [@sumimakito](https://github.com/sumimakito)
 recorded once done:
 
 <video muted autoplay>
-  <source src="/static/blog/DevLog-2025.03.20/histoire-first-look.mp4" />
+  <source src="../../../../static/blog/DevLog-2025.03.20/histoire-first-look.mp4" />
 </video>
 
 The entire OKLCH color palette can spread on to the canvas all at once
@@ -143,7 +143,7 @@ service was powered by Microsoft, with the voice named `Ashley`, along with a
 yourself:
 
 <audio>
-  <source src="/static/blog/DevLog-2025.03.20/ashley-pitch-test.mp3" />
+  <source src="../../../../static/blog/DevLog-2025.03.20/ashley-pitch-test.mp3" />
 </audio>
 
 Isn't it the same, this is insane! That's means, we can finally approach to
@@ -165,7 +165,7 @@ what Neuro-sama can do with the new **Speech** ability!
 With all of those, we can get this result:
 
 <video control muted autoplay>
-  <source src="/static/blog/DevLog-2025.03.20/airi-demo.mp4" />
+  <source src="../../../../static/blog/DevLog-2025.03.20/airi-demo.mp4" />
 </video>
 
 Nearly the same. But our story doesn't end here, currently, we haven't