fix(array_handling.md): edit referers to Arrays1/Arrays2

The original document refers to two different previous instances
arrays were described; not knowing how to link to a specific
section across to a different Markdown file, referers were
intentionally set as place holders only.  This commit attempts
to correct the situation; if working, a lint of the file still
is required.

Signed-off-by: Norwid Behrnd <[email protected]>

Author: nbehrnd

source/learn/f95_features/array_handling.md

@@ -10,6 +10,10 @@ Array handling is included in Fortran for two main reasons:
 
 At the same time, major extensions of the functionality in this area
 have been added. We have already met whole arrays above
+(see section Arrays in
+[Language elements](language_elements.md#arrays)
+and
+[Expressions and assignments](expressions_and_assignments.md#arrays))
 <a href="#Arrays" class="wikilink" title="#Arrays 1">#Arrays 1</a> and
 here
 <a href="#Arrays_2" class="wikilink" title="#Arrays 2">#Arrays 2</a> -