add download url for nuget.org/slua-standalone
add download url for nuget.org/slua-standalone

jiangzhhhh/slua,Roland0511/slua,jiangzhhhh/slua,pangweiwei/slua,Roland0511/slua,Roland0511/slua,mr-kelly/slua,Roland0511/slua,haolly/slua_source_note,soulgame/slua,mr-kelly/slua,pangweiwei/slua,jiangzhhhh/slua,jiangzhhhh/slua,pangweiwei/slua,Roland0511/slua,mr-kelly/slua,soulgame/slua,Roland0511/slua,pangweiwei/slua,mr-kelly/slua,jiangzhhhh/slua,haolly/slua_source_note,mr-kelly/slua,mr-kelly/slua,pangweiwei/slua,soulgame/slua,haolly/slua_source_note,haolly/slua_source_note,soulgame/slua,soulgame/slua,soulgame/slua,jiangzhhhh/slua,haolly/slua_source_note,haolly/slua_source_note