feat: add documentation for new ingress annotation(#1415)

Author: vepatel

content/nic/configuration/ingress-resources/advanced-configuration-with-annotations.md

@@ -123,6 +123,7 @@ The table below summarizes the available annotations.
 | *nginx.org/proxy-hide-headers* | *proxy-hide-headers* | Sets the value of one or more  [proxy_hide_header](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_hide_header) directives. Example: `"nginx.org/proxy-hide-headers": "header-a,header-b"` | N/A |  |
 | *nginx.org/proxy-pass-headers* | *proxy-pass-headers* | Sets the value of one or more   [proxy_pass_header](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_pass_header) directives. Example: `"nginx.org/proxy-pass-headers": "header-a,header-b"` | N/A |  |
 | *nginx.org/rewrites* | N/A | Configures URI rewriting using [proxy_pass](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_pass) directive. | N/A | [rewrites](https://github.com/nginx/kubernetes-ingress/tree/v{{< nic-version >}}/examples/ingress-resources/rewrites) |
+| *nginx.org/rewrite-target* | N/A | Configures URI rewriting using the [rewrite](https://nginx.org/en/docs/http/ngx_http_rewrite_module.html#rewrite) directive. The annotation value specifies the target path that requests should be rewritten to. Supports regex capture groups (`$1`, `$2`, etc.) when used with `nginx.org/path-regex`. Mutually exclusive with `nginx.org/rewrites`. | N/A | [rewrite-target](https://github.com/nginx/kubernetes-ingress/tree/v{{< nic-version >}}/examples/ingress-resources/rewrite-target) |
 |*nginx.org/proxy-set-headers* | N/A | Enables customization of proxy headers and values using the [proxy_set_header](https://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_set_header) directive. Example: `"nginx.org/proxy-set-headers": "header-a: valueA,header-b: valueB,header-c: valueC"` | N/A | [Proxy Set Headers](https://github.com/nginx/kubernetes-ingress/tree/v{{< nic-version >}}/examples/ingress-resources/proxy-set-headers). |
 {{< /table >}}