Update lectures/orth_proj.md

mmcky · web-flow · commit c401340ba882 · 2025-08-07T15:09:31.000+10:00
diff --git a/lectures/orth_proj.md b/lectures/orth_proj.md
@@ -460,7 +460,8 @@ $$
 $$
 ```
 
-```{prf:proof}  Note that
+```{prf:proof}  
+Note that
 
 $$
 X \hat \beta = X (X' X)^{-1} X' y =
