Fix format

Author: ryo-ma

README.md

@@ -70,7 +70,7 @@ Ranks are `SSS` `SS` `S` `AAA` `AA` `A` `B` `C` `UNKNOWN` `SECRET`.
 | UNKNOWN    | You have not taken action yet. Let's act first.                                            |
 | SECRET     | This rank is very rare. The trophy will not be displayed until certain conditions are met. |
 
-**NOTE: The ```UNKNOWN``` rank is denoted by ```?```**
+**NOTE: The `UNKNOWN` rank is denoted by `?`**
 
 ## Secret Rank
 
@@ -157,7 +157,8 @@ You can also exclude ranks.
 https://github-profile-trophy.vercel.app/?username=ryo-ma&rank=-C,-B
 ```
 
-**NOTE: Since ```UNKNOWN``` is denoted by ```?```, in order to include or exclude it you will have to use ```rank=?``` and ```rank=-?``` respectively**
+**NOTE: Since `UNKNOWN` is denoted by `?`, in order to include or exclude it you
+will have to use `rank=?` and `rank=-?` respectively**
 
 ## Specify the maximum row & column size