feat: Add icons to features section for improved visual clarity

Author: Thavarshan

docs/index.md

@@ -58,10 +58,13 @@ features:
     icon: 📦
   - title: RFC 7234 Caching
     details: Sync-only cache with ETag/Last-Modified revalidation, stale-while-revalidate, and stale-if-error support.
+    icon: 🧠
   - title: Pooling & HTTP/2
     details: Shared connection pooling, DNS cache, and optional HTTP/2 with validation and stats for debugging.
+    icon: 🌐
   - title: Debug & Profiling
     details: Unified debug snapshots and optional profiler with timing, memory, and connection stats; configurable log level.
+    icon: 🧭
 ---
 
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