Author: Tim Hunt
MDL-32039 qeupgradehelper: fix typos in the lang strings
http://git.moodle.org/gw?p=moodle.git;a=commit;h=2c92dc7babb2a1a19baee299d8bf4c78d5b23b80
http://github.com/moodle/moodle/commit/2c92dc7babb2a1a19baee299d8bf4c78d5b23b80
+ 2.2 en [invalidquizid,tool_qeupgradehelper]
+ 2.2 en [listupgraded,tool_qeupgradehelper]
+ 2.2 en [listupgradedintro,tool_qeupgradehelper]
+ 2.2 en [veryoldattemtps,tool_qeupgradehelper]