Fix missing character in checksum and add tgz checksum

plugins/python-build/share/python-build/3.10.0a7

@@ -4,7 +4,7 @@ export PYTHON_BUILD_CONFIGURE_WITH_OPENSSL=1
 install_package "openssl-1.1.1k" "https://www.openssl.org/source/openssl-1.1.1k.tar.gz#892a0875b9872acd04a9fde79b1f943075d5ea162415de3047c327df33fbaee5" mac_openssl --if has_broken_mac_openssl
 install_package "readline-8.0" "https://ftpmirror.gnu.org/readline/readline-8.0.tar.gz#e339f51971478d369f8a053a330a190781acb9864cf4c541060f12078948e461" mac_readline --if has_broken_mac_readline
 if has_tar_xz_support; then
-    install_package "Python-3.10.0a7" "https://www.python.org/ftp/python/3.10.0/Python-3.10.0a7.tar.xz#513199724498513e7098c46bf6442192f5ffef32478d92499704aeeff3516db" ldflags_dirs standard verify_py39 copy_python_gdb ensurepip
+    install_package "Python-3.10.0a7" "https://www.python.org/ftp/python/3.10.0/Python-3.10.0a7.tar.xz#513199724498513e7098c46bf6442192f5ffef32478d92499704aeeff3516db2" ldflags_dirs standard verify_py39 copy_python_gdb ensurepip
 else
-    install_package "Python-3.10.0a7" "https://www.python.org/ftp/python/3.10.0/Python-3.10.0a7.tgz#513199724498513e7098c46bf6442192f5ffef32478d92499704aeeff3516db2" ldflags_dirs standard verify_py39 copy_python_gdb ensurepip
+    install_package "Python-3.10.0a7" "https://www.python.org/ftp/python/3.10.0/Python-3.10.0a7.tgz#8a13ee8033d32085e743e965f72e5ba631c82c8ad4d75d5ff68731a74c5c742b" ldflags_dirs standard verify_py39 copy_python_gdb ensurepip
 fi