Fixed image loading in cookbook website

Author: minh-hoque

examples/Speech_transcription_methods.ipynb

@@ -142,7 +142,7 @@
     "### How it works\n",
     "\n",
     "\n",
-    "![STT Not Streaming Transcription flow](./imgs/speech-to-text-not-streaming.png)\n",
+    "![STT Not Streaming Transcription flow](../images/speech-to-text-not-streaming.png)\n",
     "\n",
     "#### Benefits\n",
     "\n",
@@ -250,7 +250,7 @@
     "- You need immediate transcription results (partial or final) as they arrive.  \n",
     "- Scenarios where partial feedback improves UX, e.g., uploading a long voice memo.\n",
     "\n",
-    "![STT Streaming Transcription flow](./imgs/speech-to-text-streaming.png)\n",
+    "![STT Streaming Transcription flow](../images/speech-to-text-streaming.png)\n",
     "\n",
     "#### Benefits\n",
     "- **Real-time feel:** Users see transcription updates almost immediately.  \n",
@@ -321,7 +321,7 @@
    "source": [
     "### How it works\n",
     "\n",
-    "![Realtime Transcription flow](./imgs/realtime_api_transcription.png)\n",
+    "![Realtime Transcription flow](../images/realtime_api_transcription.png)\n",
     "\n",
     "#### Benefits\n",
     "- **Ultra-low latency:** Typically 300–800 ms, enabling near-instant transcription.  \n",
@@ -496,7 +496,7 @@
    "source": [
     "### How it works\n",
     "\n",
-    "![Agents Transcription flow](./imgs/agents_sdk_transcription.png)\n",
+    "![Agents Transcription flow](../images/agents_sdk_transcription.png)\n",
     "\n",
     "**Benefits**\n",
     "\n",