fix: Correct issue with citation content

Author: roda82

overrides/partials/header.html

@@ -71,25 +71,28 @@ <h2 class="dialog-header">Export Citation</h2>
       </header>
 
       <div id= "citation" class="highlight">
-        ```
-        @article{fieni-2024,
-          TITLE = {{PowerAPI: A Python framework for building software-defined power meters}},
-          AUTHOR = {Fieni, Guillaume and Acero, Daniel Romero and Rust, Pierre and Rouvoy, Romain},
-          URL = {https://hal.science/hal-04601379},
-          JOURNAL = {{Journal of Open Source Software}},
-          PUBLISHER = {{Open Journals}},
-          VOLUME = {9},
-          NUMBER = {98},
-          PAGES = {6670},
-          YEAR = {2024},
-          MONTH = Jun,
-          DOI = {10.21105/joss.06670},
-          KEYWORDS = {Power ; Energy ; Toolkit ; Measurement ; Framework},
-          PDF = {https://hal.science/hal-04601379/file/10.21105.joss.06670-3.pdf},
-          HAL_ID = {hal-04601379},
-          HAL_VERSION = {v1},
-          }
-        ```
+
+        <pre>
+          <code>
+            @article{fieni-2024,
+              TITLE = {{PowerAPI: A Python framework for building software-defined power meters}},
+              AUTHOR = {Fieni, Guillaume and Acero, Daniel Romero and Rust, Pierre and Rouvoy, Romain},
+              URL = {https://hal.science/hal-04601379},
+              JOURNAL = {{Journal of Open Source Software}},
+              PUBLISHER = {{Open Journals}},
+              VOLUME = {9},
+              NUMBER = {98},
+              PAGES = {6670},
+              YEAR = {2024},
+              MONTH = Jun,
+              DOI = {10.21105/joss.06670},
+              KEYWORDS = {Power ; Energy ; Toolkit ; Measurement ; Framework},
+              PDF = {https://hal.science/hal-04601379/file/10.21105.joss.06670-3.pdf},
+              HAL_ID = {hal-04601379},
+              HAL_VERSION = {v1},
+              }
+          </code>
+        </pre>
       </div>
     <button id="copy-citation" title="Copy citation">Copy citation</button>
   </dialog>