adding the following line to postgres.sgml saved me.
+<!ENTITY commit_baseurl "https://postgr.es/c/">
Comma at end of line of these should be removed
<ulink url="&commit_baseurl;165d581f1"> [165d581f1] </ulink>,
<ulink url="&commit_baseurl;6dbb49026"> [6dbb49026] </ulink>,
Maybe those items which have lots of commits would be strange
A space before commas on next links I think should be removed because an item like this
<ulink url="&commit_baseurl;c951e9042"> [c951e9042] </ulink>,
<ulink url="&commit_baseurl;d16eb83ab"> [d16eb83ab] </ulink>,
<ulink url="&commit_baseurl;cd3424748"> [cd3424748] </ulink>,
<ulink url="&commit_baseurl;816f10564"> [816f10564] </ulink>,
<ulink url="&commit_baseurl;927332b95"> [927332b95] </ulink>,
<ulink url="&commit_baseurl;f1bb9284f"> [f1bb9284f] </ulink>,
<ulink url="&commit_baseurl;304b6b1a6"> [304b6b1a6] </ulink>,
<ulink url="&commit_baseurl;60ae37a8b"> [60ae37a8b] </ulink>,
<ulink url="&commit_baseurl;2800fbb2b"> [2800fbb2b] </ulink>
would be like
And if removed that space would be
But if we use just one bracket, then would be
regards
Marcos