Bug #892959 Change language strings

Completed the fractured description sentences
on the 'Portfolio' >> 'Export'  page.

Change-Id: I530e2ec7ad64bc041f47b6e5e185eff5103c631b
Signed-off-by: Ali Kaye <alexandrakaye.student@wegc.school.nz>

htdocs/export/html/lang/en.utf8/export.html.php

@@ -28,7 +28,7 @@
 defined('INTERNAL') || die();
 
 $string['title'] = 'Standalone HTML web site';
-$string['description'] = 'Creates a self-contained website with your portfolio data. You cannot import this again, but it is readable in a standard web browser.';
+$string['description'] = 'This creates a self-contained website with your portfolio data. You cannot import this again, but it is readable in a standard web browser.';
 $string['usersportfolio'] = '%s - Portfolio';
 
 $string['preparing'] = 'Preparing %s';

htdocs/export/leap/lang/en.utf8/export.leap.php

@@ -29,4 +29,4 @@ defined('INTERNAL') || die();
 
 $string['title'] = 'Leap2A';
 // TODO: link Leap2A standard format to a primer document on our wiki about Leap2A
-$string['description'] = 'Gives you an export in the <a href="http://wiki.leapspecs.org/2A/specification">Leap2A standard format</a>. You can later use this to import your data into <a href="https://wiki.mahara.org/index.php/Developer_Area/Import//Export/Interoperability">other Leap2A-compliant systems</a>, although the export is hard for humans to read.';
+$string['description'] = 'This gives you an export in the <a href="http://wiki.leapspecs.org/2A/specification">Leap2A standard format</a>. You can later use this to import your data into <a href="https://wiki.mahara.org/index.php/Developer_Area/Import//Export/Interoperability">other Leap2A-compliant systems</a>, although the export is hard for humans to read.';