Sql Multirow in single row with line break

Question

in my sql table 

id	contents
1	My content in first column
1	My content in second  column

 

I want these two rows same id's 1 ,1 in a single row in sql , But not concate with comma seperation rather i want one line with line break then second line so they will appear in the row with line break .Please help.

i want them per requirement as below

id	contents
1	My content in first column My content in second column