[flang][docs] fix stack arrays docs page name (#80708)

tblah · web-flow · commit 2d416219af5c · 2024-02-05T17:11:47.000Z
The website renders this `<h1>` as the page title in the index. This patch updates the title to better fit with the names of the other pages. See the index here https://flang.llvm.org/docs/
diff --git a/flang/docs/fstack-arrays.md b/flang/docs/fstack-arrays.md
@@ -1,4 +1,4 @@
-# -fstack-arrays
+# Stack arrays pass
 ## Problem Description
 In gfortran, `-fstack-arrays` will cause all local arrays, including those of
 unknown size, to be allocated from stack memory. Gfortran enables this flag by

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# -fstack-arrays`
	`1`	`+# Stack arrays pass`
`2`	`2`	`## Problem Description`
`3`	`3`	In gfortran, `-fstack-arrays` will cause all local arrays, including those of
`4`	`4`	`unknown size, to be allocated from stack memory. Gfortran enables this flag by`