fix: long link text overflows (#139)

Author: sunjie21

packages/streamdown/__tests__/components.test.tsx

@@ -119,6 +119,7 @@ describe("Markdown Components", () => {
       );
       const link = container.querySelector("a");
       expect(link).toBeTruthy();
+      expect(link?.className).toContain("wrap-anywhere");
       expect(link?.className).toContain("font-medium");
       expect(link?.className).toContain("text-primary");
       expect(link?.className).toContain("underline");

packages/streamdown/lib/components.tsx

@@ -146,7 +146,10 @@ export const components: Options["components"] = {
 
     return (
       <a
-        className={cn("font-medium text-primary underline", className)}
+        className={cn(
+          "wrap-anywhere font-medium text-primary underline",
+          className
+        )}
         data-incomplete={isIncomplete}
         data-streamdown="link"
         href={href}