fix: share manager tests translation string

Signed-off-by: John Molakvoæ <skjnldsv@users.noreply.github.com>

Author: skjnldsv

tests/lib/Share20/ManagerTest.php

@@ -652,7 +652,7 @@ public function dataGeneralChecks() {
 			[$this->createShare(null, IShare::TYPE_LINK, $file, $user2, $user0, $user0, 31, null, null), 'SharedWith should be empty', true],
 			[$this->createShare(null, IShare::TYPE_LINK, $file, $group0, $user0, $user0, 31, null, null), 'SharedWith should be empty', true],
 			[$this->createShare(null, IShare::TYPE_LINK, $file, 'foo@bar.com', $user0, $user0, 31, null, null), 'SharedWith should be empty', true],
-			[$this->createShare(null, -1, $file, null, $user0, $user0, 31, null, null), 'unknown share type', true],
+			[$this->createShare(null, -1, $file, null, $user0, $user0, 31, null, null), 'Unknown share type', true],
 
 			[$this->createShare(null, IShare::TYPE_USER, $file, $user2, null, $user0, 31, null, null), 'SharedBy should be set', true],
 			[$this->createShare(null, IShare::TYPE_GROUP, $file, $group0, null, $user0, 31, null, null), 'SharedBy should be set', true],