chore: fixing the number of concurrent users in performance efficiency

docs/src/01_introduction_and_goals.adoc

@@ -30,7 +30,7 @@ See the complete functional requirements in the xref:#section-annex[Annex] of th
 | Reliability | The system should be reliable in generating questions from Wikidata, ensuring that questions are accurate and diverse. The system must handle user registrations, logins, and game data storage without errors.
 | Availability | The system must be available 99.99% of the time a user tries to access it.
 | Maintainability | The system must be designed and implemented in a way that facilitates easy maintenance and updates.
-| Performance efficiency | The system must deliver optimal performance, ensuring responsive interactions for users. The automatic generation of questions from Wikidata and the real-time gameplay must be efficient. The system must handle 3000 (temporal datum) concurrent users.
+| Performance efficiency | The system must deliver optimal performance, ensuring responsive interactions for users. The automatic generation of questions from Wikidata and the real-time gameplay must be efficient. The system must handle N concurrent users.
 | Usability | The system must provide a user-friendly interface, making it easy for users to register, log in, and play the game. The system learning time for a user should be less than 4 hours.
 | Compatibility | The system must be compatible with various web browsers and devices, ensuring a seamless experience for users regardless of their choice of platform. It has to be well-optimized for different screen sizes and functionalities.
 | Transferability | The system must allow for easy transfer of user data and game-related information through its APIs.

docs/src/10_quality_requirements.adoc

@@ -18,7 +18,7 @@ To obtain a measurable system response to stimulus corresponding to the various
 | Security | User data shall be securely handled. Robust authentication mechanisms shall be in place for user registration and login. API access points for user information and generated questions shall be secured with proper authorization. | High, High 
 | Reliability | The system shall reliably generate accurate and diverse questions from Wikidata. User registrations, logins, and game data storage shall be handled without errors. | High, Medium
 | Availability | The system shall be available 99.99% of the time when a user attempts to access it. | High, High
-| Performance efficiency | The system shall deliver optimal performance, ensuring responsive interactions for users. It shall efficiently generate questions from Wikidata and handle real-time gameplay with up to 20 concurrent users. | High, High
+| Performance efficiency | The system shall deliver optimal performance, ensuring responsive interactions for users. It shall efficiently generate questions from Wikidata and handle real-time gameplay with up to N concurrent users. | High, High
 | Usability | The system shall provide a user-friendly interface, allowing users to register, log in, and play the game with a learning time of less than 4 hours. | High, Medium
 | Compatibility | The system shall be compatible with various web browsers and devices, providing a seamless experience for users regardless of their choice of platform. It shall be well-optimized for different screen sizes and functionalities. | High, Medium
 | Transferability | The system shall allow for easy transfer of user data and game-related information through its APIs. | Medium, High