docs: enhance configuration template with detailed settings

- Added GENERAL section with documented configuration options
- Added descriptions for PORT, SIMILARITY_MEASURE, and KEEP_ALIVE settings
- Improved configuration template readability

sample.config.toml

@@ -1,3 +1,8 @@
+[GENERAL]
+PORT = 3001 # Port to run the server on
+SIMILARITY_MEASURE = "cosine" # "cosine" or "dot"
+KEEP_ALIVE = "5m" # How long to keep Ollama models loaded into memory. (Instead of using -1 use "-1m")
+
 [API_KEYS]
 OPENAI = ""
 GROQ = ""