grammatical fix

Author: drbenvincent

docs/source/notebooks/did_pymc_banks.ipynb

@@ -852,7 +852,7 @@
    "source": [
     "## Analysis 4 - Two way fixed effects\n",
     "\n",
-    "Finally, we can do evaluate difference in difference model in its two-way fixed effects (TWFE) formulation. \n",
+    "Finally, we can evaluate difference in difference model in its two-way fixed effects (TWFE) formulation. \n",
     "\n",
     "This is similar to the previous model in that the `district:post_treatment` interaction term still gives you a treatment indicator variable and the assiated coefficient $\\beta_{\\Delta}$ is the causal effect of the intervention.\n",
     "\n",