Translation fixes

Change "BIOS Address" -> "BIOS address"

Consistency for "KB" in Xi8088 configuration

Fix incorrect source strings and restore their correct translations
that were lost; apply trivial edits

Fix duplicate strings in the Polish translation

src/machine/m_xt_xi8088.c

@@ -110,11 +110,11 @@ static const device_config_t xi8088_config[] = {
         .type = CONFIG_SELECTION,
         .selection = {
             {
-                .description = "64 kB starting from F0000",
+                .description = "64 KB starting from F0000",
                 .value = 0
             },
             {
-                .description = "128 kB starting from E0000 (address MSB inverted, last 64KB first)",
+                .description = "128 KB starting from E0000 (address MSB inverted, last 64 KB first)",
                 .value = 1
             }
         },