theme: Capitalize EDL

TWRP used 'Edl', but everywhere else, it is 'EDL'.

Change-Id: I4f63185ffb96797da0d695b34857ee242cfa33e8
diff --git a/gui/theme/common/languages/sk.xml b/gui/theme/common/languages/sk.xml
index f4e56ef..e212f7d 100644
--- a/gui/theme/common/languages/sk.xml
+++ b/gui/theme/common/languages/sk.xml
@@ -262,7 +262,7 @@
 		<string name="rb_recovery_btn">Recovery</string>
 		<string name="rb_bootloader_btn">Bootloader</string>
 		<string name="rb_download_btn">StiahnuƄ</string>
-		<string name="rb_edl_btn">Edl</string>
+		<string name="rb_edl_btn">EDL</string>
 		<string name="turning_off">Vypínanie...</string>
 		<string name="swipe_power_off">Potiahnite pre vypnutie</string>
 		<string name="swipe_power_off_s">VypnúĆ„</string>