Merge pull request #60 from Meg528/patch-45

Update 1-lookups.mdx

Author: dfreniche

docs/60-lookups/1-lookups.mdx

@@ -108,7 +108,7 @@ db.authors.aggregate([
 </Tabs>
 
 
-The nice part is that we can extract that pipeline and test it/tweak it. (This will only work in the MongoDB Shell)
+The nice part is that we can extract that pipeline and test it/tweak it. (This will only work in the MongoDB Shell.)
 
 <Tabs groupId="aggregations">
 <TabItem value="mongodb-shell" label="MongoDB Shell">