docs: update for .ov()

Author: soedirgo

README.md

@@ -147,7 +147,7 @@ let resp = client
     .wfts("phrase", "The Fat Cats", None)
     .cs("countries", "(10,20)")
     .cd("countries", "(10,20)")
-    .ov("population_range", (100, 500))
+    .ov("population_range", "(100,500)")
     .sl("population_range", (100, 500))               // ...and range operations!
     .sr("population_range", (100, 500))               // Find out more about the filters at:
     .nxl("population_range", (100, 500))              // https://postgrest.org/en/stable/api.html#operators

src/filter.rs

@@ -635,8 +635,8 @@ impl Builder {
         self
     }
 
-    /// Finds all rows whose array or range value on the stated `column` is
-    /// contained by the specified `filter`.
+    /// Finds all rows whose array or range value on the stated `column`
+    /// overlaps with the specified `filter`.
     ///
     /// # Example
     ///