pstoedit: add page (#10939)

* pstoedit: add page

---------

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Juri Dispan <juri.dispan@posteo.net>

pages/linux/pstoedit.md

@@ -0,0 +1,12 @@
+# pstoedit
+
+> Convert PDF files into various image formats.
+> More information: <http://www.pstoedit.net>.
+
+- Convert a PDF page to PNG or JPEG format:
+
+`pstoedit -page {{page_number}} -f magick {{path/to/file.pdf}} {{page.png|page.jpg]}}`
+
+- Convert multiple PDF pages to numbered images:
+
+`pstoedit -f magick {{path/to/file}} {{page%d.png|page%d.jpg}}`