firefox: avoid-running-autoconf2.13.patch: Fix Upstream-Status format

* as reported by:
  openembedded-core/scripts/contrib/patchreview.py -v .

  Malformed Upstream-Status 'Malformed Upstream-Status in patch
  ./recipes-browser/firefox/firefox/fixes/avoid-running-autoconf2.13.patch
  Please correct according to https://www.openembedded.org/wiki/Commit_Patch_Message_Guidelines#Patch_Header_Recommendations:_Upstream-Status :
      Upstream-Status: Inappropriate [OE-specific]' (./recipes-browser/firefox/firefox/fixes/avoid-running-autoconf2.13.patch)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

Author: shr-project

meta-firefox/recipes-browser/firefox/firefox/fixes/avoid-running-autoconf2.13.patch

@@ -9,7 +9,7 @@ commit 88652e61a4cfaf20130b73713468c8dc1dcf224a
 
     Use pre-generated old-configure instead.
 
-    Upstream-Status: Inappropriate [OE-specific]
+Upstream-Status: Inappropriate [OE-specific]
 
 ---
  build/moz.configure/old.configure | 2 ++