Update icon and change the label of the parameter in generate API#20

SasinduDilshara merged 3 commits intoballerina-platform:mainballerina-platform/module-ballerinax-ai.openai:mainfrom

SasinduDilshara:add-image-documentsSasinduDilshara/module-ballerinax-ai.openai:add-image-documentsCopy head branch name to clipboard