Update ajson.md

Author: oblomov-dev

docs/advanced/technical/ajson.md

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 # ajson
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+abap2UI5 relies heavily on JSON handling for frontend/backend communication, initially using `/UI2/CL_JSON`. Over time, various issues arose because certain functionalities were not available in specific releases and its limited documentation.
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+To address these challenges, abap2UI5 now uses the open-source project [ajson](https://github.com/sbcgua/ajson) for JSON handling. It is integrated into the project under the `z2ui5` namespace, ensuring that ajson is automatically installed with every abap2UI5 installation. This significantly reduces dependencies on SAP APIs.
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+Moreover, working with ajson is straightforward thanks to its clear API, excellent documentation, quick support for issue resolution, and best of all—it is compatible from version 702 to ABAP Cloud.