[rjournal] insert newline at correct place in template (#388)

Author: cderv

NEWS.md

@@ -1,6 +1,7 @@
 rticles 0.20
 ---------------------------------------------------------------------
 
+- fix an issue with `rjournal_article()` template to insert newline in author's block only if a field exist (thanks, @huizezhang-sherry, #387)
 
 rticles 0.19
 ---------------------------------------------------------------------

inst/rmarkdown/templates/rjournal/resources/template.tex

@@ -25,9 +25,9 @@
 $author.affiliation2$\\%
 $for(author.address2)$$author.address2$$sep$\\ $endfor$\\
 $endif$%
-$if(author.url)$$author.url$$endif$%
-$if(author.orcid)$\\\textit{ORCiD: \href{https://orcid.org/$author.orcid$}{$author.orcid$}}$endif$%
-$if(author.email)$\\$author.email$$endif$
+$if(author.url)$$author.url$\\$endif$%
+$if(author.orcid)$\textit{ORCiD: \href{https://orcid.org/$author.orcid$}{$author.orcid$}}\\$endif$%
+$if(author.email)$$author.email$$endif$%
 }
 
 $endfor$