Userland: Rename PCI slot to PCI device terminology

Author: https://github.com/boricj
Commit: b48d8d1d6d
Pull-request: https://github.com/SerenityOS/serenity/pull/5196
Issue: https://github.com/SerenityOS/serenity/issues/5190
Reviewed-by: https://github.com/supercomputer7

Kernel/FileSystem/ProcFS.cpp

@@ -363,7 +363,7 @@ static bool procfs$pci(InodeIdentifier, KBufferBuilder& builder)
         auto obj = array.add_object();
         obj.add("seg", address.seg());
         obj.add("bus", address.bus());
-        obj.add("slot", address.device());
+        obj.add("device", address.device());
         obj.add("function", address.function());
         obj.add("vendor_id", id.vendor_id);
         obj.add("device_id", id.device_id);