Add length function docs (#1141)

* Add length function docs

* Format

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Co-authored-by: Katarina Supe <[email protected]>

Author: Josipmrden

pages/querying/functions.mdx

@@ -47,10 +47,11 @@ This section contains the list of supported functions.
  | `head`           | `head(list: List[any]) -> (any)`                                                                  | Returns the first element of a list.                                                                                                                                                                                                             |
  | `id`             | `id(value: Node\|Relationship) -> (integer)`                                                      | Returns identifier for a given node or relationship. The identifier is generated during the initialization of a node or a relationship  and will be persisted through the durability mechanism.                                                  |
  | `last`           | `last(list: List[any]) -> (any)`                                                                  | Returns the last element of a list.                                                                                                                                                                                                              |
+ | `length`         | `length(value: List\|string\|Map\|Path) -> (integer)`                                             | Returns the number of elements in the value. When given a **list** it returns the size of the list. When given a string it returns the number of characters. When given a path it returns the number of expansions (relationships) in that path. |
  | `properties`     | `properties(value: Node\|Relationship) -> (Map[string, any])`                                     | Returns the property map of a node or a relationship.                                                                                                                                                                                            |
  | `propertySize`   | `propertySize(entity: Node\|Relationship, property-name: string) -> (integer)`                    | Returns the total amount of bytes stored in RAM for the property of a given entity node or relationship. For more information, check [storage of properties inside Memgraph](/fundamentals/storage-memory-usage#calculate-storage-memory-usage). |
  | `randomUUID`     | `randomUUID() -> (string)`                                                                        | Returns randomly-generated Universally Unique Identifier (UUID)                                                                                                                                                                                  |
- | `size`           | `size(value: List[any]\|string\|Map[string, any]\|Path) -> (integer)`                             | Returns the number of elements in the value. When given a **list** it returns the size of the list. When given a string it returns the number of characters. When given a path it returns the number of expansions (relationships) in that path. |
+ | `size`           | `size(value: List\|string\|Map\|Path) -> (integer)`                                               | Returns the number of elements in the value. When given a **list** it returns the size of the list. When given a string it returns the number of characters. When given a path it returns the number of expansions (relationships) in that path. |
  | `startNode`      | `startNode(relationship: Relationship) -> (Node)`                                                 | Returns the starting node of a relationship.                                                                                                                                                                                                     |
  | `toBoolean`      | `toBoolean(value: boolean\|integer\|string) -> (boolean)`                                         | Converts the input argument to a boolean value, regardless of case sensitivity. The values `true` and `false` are directly converted to `true` or `false`, respectively. Additionally, the strings "true" and "t" are mapped to `true`, while the strings "false" and "f" are mapped to `false`. |
  | `toFloat`        | `toFloat(value: number\|string) -> (float)`                                                       | Converts the argument to a floating point number.                                                                                                                                                                                                |