Fix typos in utilities and access control docs (#4920)

Co-authored-by: Ernesto García <ernestognw@gmail.com>

Author: enjoyooor

docs/modules/ROOT/pages/access-control.adoc

@@ -279,7 +279,7 @@ For systems already using xref:api:access.adoc#AccessControl[`AccessControl`], t
 
 ```javascript
 // Revoke old roles
-await accessControl.connect(admin).revokeRoke(MINTER_ROLE, account);
+await accessControl.connect(admin).revokeRole(MINTER_ROLE, account);
 
 // Grant the admin role to the access manager
 await accessControl.connect(admin).grantRole(DEFAULT_ADMIN_ROLE, accessManager);

docs/modules/ROOT/pages/utilities.adoc

@@ -82,10 +82,10 @@ contract MyContract {
     using SignedMath for int256;
 
     function tryOperations(uint256 a, uint256 b) internal pure {
-        (bool succededAdd, uint256 resultAdd) = x.tryAdd(y);
-        (bool succededSub, uint256 resultSub) = x.trySub(y);
-        (bool succededMul, uint256 resultMul) = x.tryMul(y);
-        (bool succededDiv, uint256 resultDiv) = x.tryDiv(y);
+        (bool succeededAdd, uint256 resultAdd) = x.tryAdd(y);
+        (bool succeededSub, uint256 resultSub) = x.trySub(y);
+        (bool succeededMul, uint256 resultMul) = x.tryMul(y);
+        (bool succeededDiv, uint256 resultDiv) = x.tryDiv(y);
         // ...
     }