format references

Author: Gerit Wagner

docs/source/index.rst

@@ -216,13 +216,14 @@ References
      *Campbell Systematic Reviews*, 18(4), e1288. doi: `10.1002/cl2.1288 <https://onlinelibrary.wiley.com/doi/full/10.1002/cl2.1288>`_
 
     Li, Z., & Rainer, A. (2023). Reproducible Searches in Systematic Reviews: An Evaluation and Guidelines.
-      IEEE Access, 11, 84048–84060. IEEE Access. https://doi.org/10.1109/ACCESS.2023.3299211
+      IEEE Access, 11, 84048–84060. IEEE Access. doi: `10.1109/ACCESS.2023.3299211 <https://doi.org/10.1109/ACCESS.2023.3299211>`_
 
     Salvador-Oliván, J. A., Marco-Cuenca, G., & Arquero-Avilés, R. (2019).
-      Errors in search strategies used in systematic reviews and their effects on information retrieval. Journal of the Medical Library Association : JMLA, 107(2), 210. https://doi.org/10.5195/jmla.2019.567
+      Errors in search strategies used in systematic reviews and their effects on information retrieval.
+      Journal of the Medical Library Association : JMLA, 107(2), 210. doi: `10.5195/jmla.2019.567 <https://doi.org/10.5195/jmla.2019.567>`_
 
     Sampson, M., & McGowan, J. (2006). Errors in search strategies were identified by type and frequency.
-      Journal of Clinical Epidemiology, 59(10), 1057–1063. https://doi.org/10.1016/j.jclinepi.2006.01.007
+      Journal of Clinical Epidemiology, 59(10), 1057–1063. doi: `10.1016/j.jclinepi.2006.01.007 <https://doi.org/10.1016/j.jclinepi.2006.01.007>`_
 
 
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