Update docs

contracts/security/Pausable.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)
+// OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol)
 
 pragma solidity ^0.8.0;
 
@@ -34,13 +34,6 @@ abstract contract Pausable is Context {
         _paused = false;
     }
 
-    /**
-     * @dev Returns true if the contract is paused, and false otherwise.
-     */
-    function paused() public view virtual returns (bool) {
-        return _paused;
-    }
-
     /**
      * @dev Modifier to make a function callable only when the contract is not paused.
      *
@@ -49,7 +42,7 @@ abstract contract Pausable is Context {
      * - The contract must not be paused.
      */
     modifier whenNotPaused() {
-        require(!paused(), "Pausable: paused");
+        _requireNotPaused();
         _;
     }
 
@@ -61,10 +54,31 @@ abstract contract Pausable is Context {
      * - The contract must be paused.
      */
     modifier whenPaused() {
-        require(paused(), "Pausable: not paused");
+        _requirePaused();
         _;
     }
 
+    /**
+     * @dev Returns true if the contract is paused, and false otherwise.
+     */
+    function paused() public view virtual returns (bool) {
+        return _paused;
+    }
+
+    /**
+     * @dev Throws if the contract is paused.
+     */
+    function _requireNotPaused() internal view virtual {
+        require(!paused(), "Pausable: paused");
+    }
+
+    /**
+     * @dev Throws if the contract is not paused.
+     */
+    function _requirePaused() internal view virtual {
+        require(paused(), "Pausable: not paused");
+    }
+
     /**
      * @dev Triggers stopped state.
      *

contracts/security/PullPayment.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: MIT
-// OpenZeppelin Contracts v4.4.1 (security/PullPayment.sol)
+// OpenZeppelin Contracts (last updated v4.7.0) (security/PullPayment.sol)
 
 pragma solidity ^0.8.0;