what does "E:Malformed line 1 in source list /etc/apt/sources.list (dist) mean?

["Joseph de los Santos" <jh0u@hotmail.com>]

hello!

 When I try to install packages thru http using apt I get the message

  E:Malformed line 1 in source list /etc/apt/sources.list (dist)

 what does this mean?

  I know that I have configured my sources.list correctly but when I try to 
execute apt-get update it does not work.thanks for any advice
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