fix link

docs/docs/tutorials/usaco/usaco.ipynb

@@ -254,7 +254,7 @@
     "\n",
     "In our first section, we will build a simple zero-shot tool-calling agent to try to solve these problems. We will incorporate a simple form of [reflection](https://www.youtube.com/watch?v=v5ymBTXNqtk) directly in the agent's tool calling schema by adding a \"reasoning\" field. Furthermore, Claude was trained to \"reason\" with freeform text prior to invoking any tools. Together, this should induce reflective \"chain-of-thought\" prompting.\n",
     "\n",
-    "_Note: this diverges somewhat from the paper's implementation, which uses an explicit reflection step with a variation of the [Reflexion](../reflexion/reflexion) prompt._\n",
+    "_Note: this diverges somewhat from the paper's implementation, which uses an explicit reflection step with a variation of the [Reflexion](../../reflexion/reflexion) prompt._\n",
     "\n",
     "By the end of this section, we will have built a reflective zero-shot programming agent that looks like the section marked \"Part 1\" in the system diagram below:\n",
     "\n",