Update index.html

Author: jinjing777

index.html

@@ -435,7 +435,7 @@ <h1 class="title is-1 publication-title">Large Language Model Psychometrics: A S
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+  <div class="has-text-centered" style="margin-top: -1.0rem; margin-bottom: 1.5rem;">
     <img src="static/images/fig.png" alt="LLM Psychometrics Logo" style="max-width: 265px; width: 120%; height: auto;">
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