Merge pull request #1319 in FS/freeswitch from ~SAFAROV/freeswitch2:FS-10451 to master

* commit '0fc8c71a':
  FS-10451: Updated sound files descriptions

build/moh_version.txt

-1.0.50
+1.0.52

build/sounds_version.txt

-en-us-callie 1.0.50
-ru-RU-elena 1.0.50
-fr-ca-june 1.0.18
+en-us-callie 1.0.51
+ru-RU-elena 1.0.51
+en-ca-june 1.0.51
+fr-ca-june 1.0.51
+pt-BR-karina 1.0.51
+sv-se-jakob 1.0.50
+zh-cn-sinmei 1.0.51
+zh-hk-sinmei 1.0.51