Change return type for unnest and add missing period

Author: vishalshah-dd

content/en/logs/workspaces/sql_reference.md

@@ -92,7 +92,7 @@ The following SQL functions are supported. For Window function, see the separate
 | `trim(string s)`                                 | string                                | Removes leading and trailing whitespace from the string.                    |
 | `replace(string s, string from, string to)`      | string                                | Replaces occurrences of a substring within a string with another substring. |
 | `substring(string s, int start, int length)`     | string                                | Extracts a substring from a string, starting at a given position and for a specified length. |
-| `strpos(string s, string substring)`             | integer                               | Returns the first index position of the substring in a given string, or 0 if there is no match |
+| `strpos(string s, string substring)`             | integer                               | Returns the first index position of the substring in a given string, or 0 if there is no match. |
 | `split_part(string s, string delimiter, integer index)` | string                         | Splits the string on the given delimiter and returns the string at the given position counting from one. |
 | `extract(unit from timestamp/interval)`          | numeric                               | Extracts a part of a date or time field (such as year or month) from a timestamp or interval. |
 | `to_timestamp(string timestamp, string format)`  | timestamp                             | Converts a string to a timestamp according to the given format.             |
@@ -103,7 +103,7 @@ The following SQL functions are supported. For Window function, see the separate
 | `array_position(array a, typeof_array value)`    | integer                               | Returns the index of the first occurrence of the value found in the array, or null if value is not found. |
 | `string_to_array(string s, string delimiter)`    | array of strings                      | Splits the given string into an array of strings using the given delimiter. |
 | `array_agg(expression e)`                        | array of input type                   | Creates an array by collecting all the input values.                        |
-| `unnest(array a [, array b...])`                 | type of array                         | Expands arrays into a set of rows. This form is only allowed in a FROM clause. |
+| `unnest(array a [, array b...])`                 | rows of a [, b...]                    | Expands arrays into a set of rows. This form is only allowed in a FROM clause. |
 
 {{% collapse-content title="Examples" level="h3" %}}