org.texi: Fix typo

* doc/org.texi (Exporting code blocks): Fix typo.

doc/org.texi

@@ -14945,20 +14945,19 @@ Neither the code block nor its results will be exported.
 @end table
 
 @vindex org-export-use-babel
-
 It is possible to inhibit the evaluation of code blocks and ignore header
 arguments during export.  Setting the @code{org-export-use-babel} variable to
 @code{nil} will ensure that no code blocks are evaluated as part of the
 export process.  This can be useful in situations where potentially untrusted
 Org files are exported in an automated fashion, for example when Org is used
 as the markup language for a wiki.  No header arguments will be processed.
-For this reason it is often better to set `:eval never-export' to prevent
-code evaluation but still allow headers to be honored.  It is also possible
-to set this variable to @code{inline-only}.  In that case, only inline code
-blocks will be evaluated, in order to insert their results.  Non-inline code
-blocks are assumed to have their results already inserted in the buffer by
-manual evaluation.  This setting is useful to avoid expensive recalculations
-during export, not to provide security.
+For this reason it is often better to set @code{:eval never-export} to
+prevent code evaluation but still allow headers to be honored.  It is also
+possible to set this variable to @code{inline-only}.  In that case, only
+inline code blocks will be evaluated, in order to insert their results.
+Non-inline code blocks are assumed to have their results already inserted in
+the buffer by manual evaluation.  This setting is useful to avoid expensive
+recalculations during export, not to provide security.
 
 Code blocks in commented subtrees (@pxref{Comment lines}) are never evaluated
 on export.  However, code blocks in subtrees excluded from export