first draft ready

Author: guimachiavelli

learn/filtering_and_sorting/filter_expression_reference.mdx

@@ -69,18 +69,18 @@ genres != action
 
 ### Comparison (`>`, `<`, `>=`, `<=`)
 
-The comparison operators (`>`, `<`, `>=`, `<=`) select documents satisfying a comparison. Comparison operators apply to both numerical and string values. 
+The comparison operators (`>`, `<`, `>=`, `<=`) select documents satisfying a comparison. Comparison operators apply to both numerical and string values.
 
 The expression below returns all documents with a user rating above 85:
 
 ```
 rating.users > 85
 ```
 
-String comparisons resolve in lexicographic order: symbols followed by numbers followed by letters in alphabetic order. String comparisons can be useful when filtering human-readable dates:
+String comparisons resolve in lexicographic order: symbols followed by numbers followed by letters in alphabetic order. The expression below returns all documents released after the first day of 2004:
 
 ```
-release_date > 2004-01-09
+release_date > 2004-01-01
 ```
 
 ### `TO`