fix citation

Author: drbenvincent

examples/howto/hypothesis_testing.ipynb

@@ -538,7 +538,7 @@
    "id": "de465219",
    "metadata": {},
    "source": [
-    "{ref}`kruschke2018rejecting` outlines the HDI+ROPE decision rule, which is summarised in the figure taken from that paper:\n",
+    "{cite:t}`kruschke2018rejecting` outlines the HDI+ROPE decision rule, which is summarised in the figure taken from that paper:\n",
     "\n",
     "![](hdi_plus_rope_decision_rule.png)\n",
     "\n",

examples/howto/hypothesis_testing.myst.md

@@ -183,7 +183,7 @@ az.plot_posterior(idata, var_names=["mu"], rope=rope, figsize=(14, 3));
 
 +++
 
-{ref}`kruschke2018rejecting` outlines the HDI+ROPE decision rule, which is summarised in the figure taken from that paper:
+{cite:t}`kruschke2018rejecting` outlines the HDI+ROPE decision rule, which is summarised in the figure taken from that paper:
 
 ![](hdi_plus_rope_decision_rule.png)