The "Save As Template" function is in the File -> Templates submenu in 5.2, but the help still refers to it as "File -> Save As Template" at several places: gabor@dome:~/src/core/helpcontent2$ grep -ri "Save as Template" * source/text/swriter/guide/template_create.xhp: <paragraph id="par_id3147422" role="listitem" xml-lang="en-US">Choose <emph>File - Save As Template</emph>.</paragraph> source/text/swriter/guide/template_create.xhp:<paragraph id="par_id3149636" role="paragraph" xml-lang="en-US"><link href="text/shared/01/01110300.xhp" name="File - Save As Template">File - Save As Template</link></paragraph> source/text/swriter/guide/template_default.xhp: <paragraph xml-lang="en-US" id="par_id3156101" role="listitem" l10n="U" oldref="113">Choose <item type="menuitem">File - Templates - Save As Template</item>.</paragraph> source/text/simpress/guide/background.xhp: <paragraph role="paragraph" id="par_idN1083F" xml-lang="en-US" l10n="NEW">Choose <emph>File - Save As Template</emph> to save the document as a template.</paragraph> source/text/shared/01/01070000.xhp:<paragraph role="note" id="par_id3147654" xml-lang="en-US" l10n="U" oldref="59">To save a document as a template, use the command <emph>File - Save As Template</emph>.</paragraph> source/text/shared/guide/standard_template.xhp:<paragraph role="paragraph" id="par_id3145748" xml-lang="en-US" l10n="U" oldref="8">Save the document by choosing<emph> File</emph> -<emph> Save As Template</emph>and saving the document in the <emph>My Templates</emph> category.</paragraph> source/text/shared/guide/standard_template.xhp:<paragraph role="paragraph" id="par_id3146918" xml-lang="en-US" l10n="CHG" oldref="16">You can save a new template with <emph>File - Save As Template</emph> or by selecting "Template" file type in any Save dialog. Save the template in the user directory specified under <switchinline select="sys"><caseinline select="MAC"><emph>%PRODUCTNAME - Preferences</emph></caseinline><defaultinline><emph>Tools - Options</emph></defaultinline></switchinline><emph> - %PRODUCTNAME - Paths</emph> to be able to access the template from within the <emph>File - New - Templates</emph> dialog.</paragraph>
Gabor Kelemen committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/help/commit/?id=eb949d8e2f087ea0358719948e75a4aeacddd74f tdf#102198 Fix references to the "Save As Template" menu item