fix: update widget urls (#160)

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# Content
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Author: rushilpatel0

docs/building-with-codegen/codebase-visualization.mdx

@@ -20,7 +20,7 @@ This guide provides a basic overview of graph creation and customization. Like t
   width="100%"
   height="600px"
   scrolling="no"
-  src={`https://codegen.sh/embedded/graph?id=ef312926-286d-4c13-8e09-38e1a47882f1&zoom=0.5`}
+  src={`https://codegen.sh/embedded/graph?id=299beefe-0207-43b6-bff3-6ca9036f62eb&zoom=0.5`}
   className="rounded-xl "
   style={{
     backgroundColor: "#15141b",

docs/introduction/overview.mdx

@@ -37,7 +37,7 @@ def baz():
   width="100%"
   height="320px"
   scrolling="no"
-  src={`https://chadcode.sh/embedded/codemod/?code=${encodeURIComponent(
+  src={`https://codegen.sh/embedded/codemod/?code=${encodeURIComponent(
     metaCode
   )}&input=${encodeURIComponent(code)}`}
   style={{