README: update ar_bh 219.5h→272.5h (nuwab uploaded), recompute total

README.md

@@ -835,7 +835,7 @@ for row in ds:
 | `af_za` | South Africa | Afrikaans | 20.2 | 2.79 |
 | `am_et` | Ethiopia | Amharic | 39.6 | 3.11 |
 | `am_hy` | Armenia | Armenian | 283.3 | 2.39 |
-| `ar_bh` | Bahrain | Arabic | 219.5 | 2.72 |
+| `ar_bh` | Bahrain | Arabic | 272.5 | 2.72 |
 | `ar_dz` | Algeria | Arabic | 92.9 | 2.66 |
 | `ar_eg` | Egypt | Arabic | 22.0 | 2.86 |
 | `ar_iq` | Iraq | Arabic | 291.9 | 2.94 |