docs: Replace > with >= in pragmas to work around the highligher being unable to process the former

docs/contracts/function-modifiers.rst

@@ -18,7 +18,7 @@ if they are marked ``virtual``. For details, please see
 .. code-block:: solidity
 
     // SPDX-License-Identifier: GPL-3.0
-    pragma solidity >0.7.0 <0.9.0;
+    pragma solidity >=0.7.1 <0.9.0;
 
     contract owned {
         constructor() { owner = payable(msg.sender); }