📝 Add some notes

Author: Schneegans

src/content/docs/code-signing.mdx

@@ -37,4 +37,7 @@ Currently, only [@Schneegans](https://github.com/orgs/kando-menu/people/Schneega
 
 ## Privacy Policy
 
-Kando will not transfer any information to other networked systems unless specifically requested by the user or the person installing or operating it.
+Kando will not transfer any information to other networked systems except for the following cases:
+
+* On startup, Kando will check for updates by sending a request to `api.github.com`. This can be disabled in the settings.
+* On the first start after installation, Kando will download some spell checking dictionaries from `redirector.gvt1.com`. This is a "feature" of the underlying Electron framework and cannot easily be disabled. See [this discussion](https://github.com/orgs/kando-menu/discussions/1264) for more details.

src/content/docs/portable-mode.mdx

@@ -36,4 +36,8 @@ So for instance if you downloaded the Kando zip archive from GitHub and extracte
 
 The above example would make Kando load and save its configuration files in a subfolder named `config` next to the executable.
 If you specified an absolute path instead, Kando would use that path.
-This way, you can also use portable mode to load and save the configuration files in any other directory on your system.
+This way, you can also use portable mode to load and save the configuration files in any other directory on your system.
+
+<Aside type="note" title="Cache Files">
+  Even with portable mode enabled, Kando will still leave some traces on your system. Kando will store some cache files in the "normal" configuration directory (see [config files](/config-files)). However, these files are not critical and can be safely deleted if required.
+</Aside>