Some cleanup to metadata guide doc
Some cleanup to metadata guide doc

lukaswelte/metabase,blueoceanideas/metabase,zoowii/metabase,zoowii/metabase,zoowii/metabase,Endika/metabase,lukaswelte/metabase,lukaswelte/metabase,jonasdiel/metabase-ptBR,dashkb/metabase,blueoceanideas/metabase,lukaswelte/metabase,blueoceanideas/metabase,Endika/metabase,Endika/metabase,jonasdiel/metabase-ptBR,zoowii/metabase,jonasdiel/metabase-ptBR,jonasdiel/metabase-ptBR,lukaswelte/metabase,dashkb/metabase,Endika/metabase,dashkb/metabase,blueoceanideas/metabase,Endika/metabase,dashkb/metabase,blueoceanideas/metabase,jonasdiel/metabase-ptBR,dashkb/metabase,zoowii/metabase