Use the correct checksum - not the README file one

Descriptions.txt

@@ -58,7 +58,7 @@ g1uj40us.iso  sha1:8c80f344068291be558803f8444a8d0bffe345c8 t430 BIOS 2.72 (G1ET
 g1uj41us.iso  sha1:b645e616ef558b0adf14c663e9957f9db9835667 t430 BIOS 2.74 (G1ETB4WW) EC 1.13 (G1HT35WW)
 g1uj42us.iso  sha1:FIXME                                    t430 BIOS 2.75 (G1ETB5WW) EC 1.13 (G1HT35WW)
 g1uj43us.iso  sha1:FIXME                                    t430 BIOS 2.76 (G1ETB6WW) EC 1.13 (G1HT35WW)
-g1uj44us.iso  sha1:d45c0f00fee51f996c9e619047e98c19d51628ff t430 BIOS 2.77 (G1ETB7WW) EC 1.13 (G1HT35WW)
+g1uj44us.iso  sha1:60c5a5302c978ae0da22f3bcc20cfcb7f8ecac78 t430 BIOS 2.77 (G1ETB7WW) EC 1.13 (G1HT35WW)
 g2uj23us.iso  sha1:d4f9d597ea792f966257c01c3b5442354f0b3cc8 x230 BIOS 2.66 (G2ETA6WW) EC 1.14 (G2HT35WW)
 g2uj24us.iso  sha1:FIXME                                    x230 BIOS 2.67 (G2ETA7WW) EC 1.14 (G2HT35WW)
 g2uj25us.iso  sha1:6a457ffd04d47afd00bdac7c7dd43c6da076029e x230 BIOS 2.68 (G2ETA8WW) EC 1.14 (G2HT35WW)