Add URL path templating support with validation and documentation

README.md

@@ -74,18 +74,6 @@ Send 10,000 GET requests with 50 concurrent connections and a random User-Agent
 sarin -U http://example.com -r 10_000 -c 50 -H "User-Agent: {{ fakeit_UserAgent }}"
 ```
 
-Example output:
-
-```
-┌──────────┬───────┬──────────┬───────────┬─────────┬───────────┬──────────┬───────────┐
-│ Response │ Count │ Min      │ Max       │ Average │ P90       │ P95      │ P99       │
-├──────────┼───────┼──────────┼───────────┼─────────┼───────────┼──────────┼───────────┤
-│ 200      │ 10000 │ 78.038ms │ 288.153ms │ 94.71ms │ 103.078ms │ 131.08ms │ 269.218ms │
-├──────────┼───────┼──────────┼───────────┼─────────┼───────────┼──────────┼───────────┤
-│ Total    │ 10000 │ 78.038ms │ 288.153ms │ 94.71ms │ 103.078ms │ 131.08ms │ 269.218ms │
-└──────────┴───────┴──────────┴───────────┴─────────┴───────────┴──────────┴───────────┘
-```
-
 Run a 5-minute duration-based test:
 
 ```sh
@@ -112,15 +100,15 @@ For detailed documentation on all configuration options (URL, method, timeout, c
 
 ## Templating
 
-Sarin supports Go templates in methods, bodies, headers, params, cookies, and values. Use the 320+ built-in functions to generate dynamic data for each request.
+Sarin supports Go templates in URL paths, methods, bodies, headers, params, cookies, and values. Use the 320+ built-in functions to generate dynamic data for each request.
 
 **Example:**
 
 ```sh
-sarin -U http://example.com/users \
-  -V "ID={{ fakeit_UUID }}" \
-  -H "X-Request-ID: {{ .Values.ID }}" \
-  -B '{"id": "{{ .Values.ID }}"}'
+sarin -U "http://example.com/users/{{ fakeit_UUID }}" -r 1000 -c 10 \
+  -V "RequestID={{ fakeit_UUID }}" \
+  -H "X-Request-ID: {{ .Values.RequestID }}" \
+  -B '{"request_id": "{{ .Values.RequestID }}"}'
 ```
 
 For the complete templating guide and functions reference, see the **[Templating Guide](docs/templating.md)**.