Fixed typo in documentation (#29341)

Author: jpalvarezl

specification/ai/OpenAI.Assistants/tools/models.tsp

@@ -287,7 +287,7 @@ union AssistantsNamedToolChoiceType {
   fileSearch: "file_search",
 }
 
-/** The function name that will be used, if using the `funtion` tool */
+/** The function name that will be used, if using the `function` tool */
 @added(ServiceApiVersions.v2024_05_01_preview)
 model FunctionName {
   /** The name of the function to call */

specification/ai/data-plane/OpenAI.Assistants/OpenApiV3/2024-05-01-preview/assistants_generated.yaml

@@ -2072,7 +2072,7 @@ components:
         name:
           type: string
           description: The name of the function to call
-      description: The function name that will be used, if using the `funtion` tool
+      description: The function name that will be used, if using the `function` tool
     FunctionToolDefinition:
       type: object
       required: