docs(linux): clearify warning about ARM AppImage support

saw multiple people ignore the headline making them think x86 appimages weren't a thing

docs/guides/building/linux.md

@@ -75,7 +75,7 @@ Manual compilation is suitable when you don't need to compile your application f
 
 :::warning
 
-AppImages can only be built on ARM devices. To avoid Tauri from building it, you can customize tauri.conf.json in the src-tauri folder. Adjust the "targets" array to include only the desired platforms for your ARM-based device. For instance:
+ARM AppImages can only be built on ARM devices. To avoid Tauri from building it when cross-compiling, you can customize tauri.conf.json in the src-tauri folder. Adjust the "targets" array to include only the desired platforms for your ARM-based device. For instance:
 
 "targets": ["deb", "nsis", "msi", "app", "dmg", "updater"],
 
@@ -234,7 +234,7 @@ For automated ARM executable builds on GitHub, we'll use the [arm-runner-action]
 
 :::warning
 
-AppImages can only be built on ARM devices. To avoid Tauri from building it, you can customize tauri.conf.json in the src-tauri folder. Adjust the "targets" array to include only the desired platforms for your ARM-based device. For instance:
+ARM AppImages can only be built on ARM devices. To avoid Tauri from building it when cross-compiling, you can customize tauri.conf.json in the src-tauri folder. Adjust the "targets" array to include only the desired platforms for your ARM-based device. For instance:
 
 "targets": ["deb", "nsis", "msi", "app", "dmg", "updater"],