[megaco] Add (sdp) wrapper function to interface module
[megaco] Add (sdp) wrapper function to interface module

An already documented (wrapper) function was acually missing.
The function megaco:get_sdp_record_from_PropertyGroup/2 was
documented but did not exist in the main interface module
(megaco.erl). It did exist inte the sdp module (megaco_sdp.erl).
So, instead of documenting the megaco_sdp module, we added
the missing wrapper function in the megaco module (so that
the documentation is, finally, correct).

OTP-16449

potatosalad/otp,bjorng/otp,electricimp/otp,ferd/otp,dumbbell/otp,vinoski/otp,mikpe/otp,jj1bdx/otp,bjorng/otp,vinoski/otp,kvakvs/otp,dumbbell/otp,isvilen/otp,emacsmirror/erlang,dgud/otp,ferd/otp,kvakvs/otp,jj1bdx/otp,kvakvs/otp,ferd/otp,electricimp/otp,vladdu/otp,erlang/otp,jj1bdx/otp,emacsmirror/erlang,erlang/otp,isvilen/otp,ferd/otp,dumbbell/otp,jj1bdx/otp,vladdu/otp,potatosalad/otp,uabboli/otp,ferd/otp,jj1bdx/otp,potatosalad/otp,erlang/otp,vinoski/otp,isvilen/otp,ferd/otp,kvakvs/otp,lrascao/otp,emacsmirror/erlang,lrascao/otp,electricimp/otp,electricimp/otp,rlipscombe/otp,g-andrade/otp,dumbbell/otp,vinoski/otp,vladdu/otp,dumbbell/otp,getong/otp,lrascao/otp,lrascao/otp,jj1bdx/otp,dgud/otp,bjorng/otp,mikpe/otp,potatosalad/otp,mikpe/otp,vinoski/otp,electricimp/otp,dgud/otp,mikpe/otp,g-andrade/otp,isvilen/otp,mikpe/otp,bjorng/otp,dgud/otp,mikpe/otp,lrascao/otp,vladdu/otp,dumbbell/otp,g-andrade/otp,bjorng/otp,emacsmirror/erlang,uabboli/otp,bjorng/otp,uabboli/otp,erlang/otp,electricimp/otp,kvakvs/otp,electricimp/otp,g-andrade/otp,dgud/otp,rlipscombe/otp,potatosalad/otp,jj1bdx/otp,electricimp/otp,emacsmirror/erlang,erlang/otp,g-andrade/otp,ferd/otp,erlang/otp,dumbbell/otp,potatosalad/otp,ferd/otp,uabboli/otp,potatosalad/otp,getong/otp,electricimp/otp,getong/otp,vladdu/otp,vinoski/otp,vladdu/otp,uabboli/otp,rlipscombe/otp,potatosalad/otp,dumbbell/otp,jj1bdx/otp,getong/otp,rlipscombe/otp,mikpe/otp,lrascao/otp,g-andrade/otp,emacsmirror/erlang,kvakvs/otp,dgud/otp,ferd/otp,isvilen/otp,dgud/otp,kvakvs/otp,vinoski/otp,vladdu/otp,bjorng/otp,getong/otp,uabboli/otp,jj1bdx/otp,getong/otp,rlipscombe/otp,lrascao/otp,vinoski/otp,g-andrade/otp,rlipscombe/otp,jj1bdx/otp,dgud/otp,erlang/otp,dgud/otp,vladdu/otp,dumbbell/otp,isvilen/otp,getong/otp,uabboli/otp,mikpe/otp,mikpe/otp,bjorng/otp,rlipscombe/otp,lrascao/otp,isvilen/otp,kvakvs/otp,potatosalad/otp,vinoski/otp,dumbbell/otp,isvilen/otp,isvilen/otp,rlipscombe/otp,erlang/otp,g-andrade/otp,mikpe/otp,g-andrade/otp,potatosalad/otp,rlipscombe/otp,erlang/otp,emacsmirror/erlang,vladdu/otp,getong/otp,emacsmirror/erlang,uabboli/otp,kvakvs/otp,uabboli/otp,getong/otp,lrascao/otp,bjorng/otp,g-andrade/otp,dgud/otp,emacsmirror/erlang,vinoski/otp,isvilen/otp,getong/otp,rlipscombe/otp,erlang/otp,bjorng/otp,emacsmirror/erlang