MDL-62702 core_lib: updated the 'ltiprovider' readme_moodle.txt

lib/ltiprovider/readme_moodle.txt

@@ -6,10 +6,12 @@ Some changes from the upstream version have been made:
 * Added context type property for Context class
 * Set context type if 'context_type' parameter was submitted through POST
 * Do not require tool_consumer_instance_guid
-These changes can be reverted once the following pull requests/issues have been integrated upstream:
-* https://github.com/IMSGlobal/LTI-Tool-Provider-Library-PHP/pull/10/commits/a9a1641f1a593eba4638133245c21d9ad47d8680
-* https://github.com/IMSGlobal/LTI-Tool-Provider-Library-PHP/pull/11/commits/0bae60389bd020a02be5554516b86336e651e237
-* https://github.com/IMSGlobal/LTI-Tool-Provider-Library-PHP/issues/19
+* Prevent modification of the request to the provider
+These changes can be reverted once the following pull requests have been integrated upstream:
+* https://github.com/IMSGlobal/LTI-Tool-Provider-Library-PHP/pull/10
+* https://github.com/IMSGlobal/LTI-Tool-Provider-Library-PHP/pull/11
+* https://github.com/IMSGlobal/LTI-Tool-Provider-Library-PHP/pull/47
+* https://github.com/IMSGlobal/LTI-Tool-Provider-Library-PHP/pull/48
 
 It is recommended by upstream to install depdencies via composer - but the composer installation is bundled
 with an autoloader so it's better to do it manually.