english translation was missing a sentence in aboutus page

src/shared/translation/translationEnglish.json

@@ -1316,6 +1316,7 @@
       "header": "System conceptualization",
       "body": [
         "Theoretical preliminary conceptualization of an adaptive learning system",
+        "Further development of reliable, validated, and shortened questionnaire versions of the ILS and LIST-K using methods such as factor analysis, exhaustive feature selection, and Bayesian networks.",
         "Modeling the individual level of knowledge using a rating system",
         "Modeling student characteristics such as learning style and learning strategy",
         "Literature research on adaptive learning systems, learning analytics, Knowledge Tracing, rating systems, large language models und natural language processing",