Fix typos

Author: pitbulk

README.md

@@ -1475,7 +1475,7 @@ demo1, only changes the targets.
     valid, close the user session of the local app. Notice that the SLO
     Workflow starts and ends at the SP.
 
-    5.2 SLO Initiated by IdP. In this case, the action takes place on the IdP
+    4.2 SLO Initiated by IdP. In this case, the action takes place on the IdP
     side, the logout process is initiated at the idP, sends a Logout
     Request to the SP (SLS endpoint `sls.php` of the endpoint folder).
     The SLS endpoint of the SP process the Logout Request and if is valid,

src/Saml2/LogoutResponse.php

@@ -227,7 +227,7 @@ public function isValid($requestId = null, $retrieveParametersFromServer = false
     /**
      * Extracts a node from the DOMDocument (Logout Response Menssage)
      *
-     * @param string $query Xpath Expresion
+     * @param string $query Xpath Expression
      *
      * @return DOMNodeList The queried node
      */

src/Saml2/Response.php

@@ -997,7 +997,7 @@ public function validateSignedElements($signedElements)
     /**
      * Extracts a node from the DOMDocument (Assertion).
      *
-     * @param string $assertionXpath Xpath Expresion
+     * @param string $assertionXpath Xpath Expression
      *
      * @return DOMNodeList The queried node
      */

src/Saml2/Utils.php

@@ -892,7 +892,7 @@ public static function getExpireTime($cacheDuration = null, $validUntil = null)
      * Extracts nodes from the DOMDocument.
      *
      * @param DOMDocument      $dom     The DOMDocument
-     * @param string           $query   \Xpath Expresion
+     * @param string           $query   \Xpath Expression
      * @param DOMElement|null  $context Context Node (DOMElement)
      *
      * @return DOMNodeList The queried nodes