Add missing import in OFREP examples (#600)

* Add missing import in OFREP examples

* Add profile caching

Author: z4kn4fein

website/docs/advanced/proxy/endpoints.mdx

@@ -745,6 +745,7 @@ This endpoint is used by OFREP compatible OpenFeature providers to evaluate a fe
 **Example**:
 
 ```js title="example.js"
+import { OpenFeature } from "@openfeature/web-sdk";
 import { OFREPWebProvider } from '@openfeature/ofrep-web-provider';
 
 OpenFeature.setProvider(
@@ -810,6 +811,7 @@ This endpoint is used by OFREP compatible OpenFeature providers to evaluate all
 **Example**:
 
 ```js title="example.js"
+import { OpenFeature } from "@openfeature/web-sdk";
 import { OFREPWebProvider } from '@openfeature/ofrep-web-provider';
 
 OpenFeature.setProvider(

website/docs/advanced/proxy/overview.mdx

@@ -188,6 +188,7 @@ OFREP compatibility is only available from Proxy version <a target="_blank" href
 The Proxy conforms to the <a href="https://github.com/open-feature/protocol">OpenFeature Remote Evaluation Protocol</a>, which means it can be used with OFREP compatible OpenFeature providers.
 
 ```js title="example.js (Initializing the OFREP JS Web provider to use the Proxy)"
+import { OpenFeature } from "@openfeature/web-sdk";
 import { OFREPWebProvider } from '@openfeature/ofrep-web-provider';
 
 OpenFeature.setProvider(
@@ -746,6 +747,16 @@ To connect a Proxy instance to a Proxy profile, follow these steps:
   </tr>
   </tbody>
   </table>
+  <br/>
+
+  #### Profile caching
+  Proxy instances running in online mode are caching their connected profile if they have a [cache](#cache) configured.
+  This means that other Proxy instances running with [global offline mode](#global-offline-mode) enabled can use those cached profiles from
+  the same shared cache.
+
+  :::info
+  Offline Proxy instances only need the profile's `key` to read the connected profile from the cache, the `secret` option is not mandatory in this mode.
+  :::
 
 ### 2. Manual configuration