Enhance metadata in Fluent Bit WASM challenge

Added tags and updated categories and level for clarity.

Signed-off-by: jamieplu <179417684+jamieplu@users.noreply.github.com>

Author: jamieplu

content/challenges/d011fd20-a3f5-4480-883b-dfb34321d168/processing-log-data-with-fluent-bit-and-wasm/_index.md

@@ -6,4 +6,8 @@ weight: 3
 banner: "webAssembly-logo.png"
 id: "ebe54b58-969a-46b4-a044-8999ee25fac2"
 categories: "Webassembly"
+tags: [fluentbit, wasm, webassembly]
+level: "intermediate"
+categories: "platform"
 ---
+This challenge examines using Fluent Bit and WASM to enrich log data based on pre-existing location data in the logs. The WASM plugin is just one of the options available for processing data with Fluent Bit.