Update 0111-minimum-depth.md

Ayushmaanagarwal1211 · web-flow · commit 78ddf8926a94 · 2024-06-07T23:26:59.000+05:30
diff --git a/dsa-solutions/lc-solutions/0100-0199/0111-minimum-depth.md b/dsa-solutions/lc-solutions/0100-0199/0111-minimum-depth.md
@@ -29,7 +29,7 @@ Output: 2
 ### Constraints
 
 - The number of nodes in the tree is in the range [0, 105].
-- -100 <= Node.val <= 100
+- $-100 <= Node.val <= 100$
 
 ---
 
