Fix formatting in README.md

Author: onixlas

sliding-window/209_Minumum_Size_Subarray_Sum/README.md

@@ -22,11 +22,11 @@ If there is no such subarray, return `0` instead.
 * Input: `target = 11`, `nums = [1,1,1,1,1,1,1,1]`
 * Output: `0`
 
-Constraints:
+**Constraints:**
 
-* `1 <= target <= 109`
-* `1 <= nums.length <= 105`
-* `1 <= nums[i] <= 104`
+* `1 <= target <= 10^9`
+* `1 <= nums.length <= 10^5`
+* `1 <= nums[i] <= 10^4`
 
 
 ## Solution