MDL-74823 lib: normalize line endings for HTMLPurifier

Prior to this change, all the line endings in the imported HTMLPurifier
library were using CRLF (\r\n aka Windows style), but the HTMLPurifier
source and also the downloadable artefacts use LF (\n aka Linux style)
as line endings. This has been the case since
510d190382 when with the commit
"MDL-38672 import HTML Purifier 4.5.0" all line endings were changed
from LF to CRLF. There was no comment in the commit on why this change
was done.

As the original source uses LF, this commit partly reverts
510d190382 and goes back to LF as line
endings.

Signed-off-by: Daniel Ziegenberg <[email protected]>

lib/htmlpurifier/HTMLPurifier/ConfigSchema/schema/HTML.SafeEmbed.txt

@@ -1,13 +1,13 @@
-HTML.SafeEmbed
-TYPE: bool
-VERSION: 3.1.1
-DEFAULT: false
---DESCRIPTION--
-<p>
-    Whether or not to permit embed tags in documents, with a number of extra
-    security features added to prevent script execution. This is similar to
-    what websites like MySpace do to embed tags. Embed is a proprietary
-    element and will cause your website to stop validating; you should
-    see if you can use %Output.FlashCompat with %HTML.SafeObject instead
-    first.</p>
---# vim: et sw=4 sts=4
+HTML.SafeEmbed
+TYPE: bool
+VERSION: 3.1.1
+DEFAULT: false
+--DESCRIPTION--
+<p>
+    Whether or not to permit embed tags in documents, with a number of extra
+    security features added to prevent script execution. This is similar to
+    what websites like MySpace do to embed tags. Embed is a proprietary
+    element and will cause your website to stop validating; you should
+    see if you can use %Output.FlashCompat with %HTML.SafeObject instead
+    first.</p>
+--# vim: et sw=4 sts=4