vis: fix PKG_MAINTAINER name to generate a valid JSON output for 'package-metadata.pl'

The extra quotation marks in the PKG_MAINTAINER line of the '.packageinfo'
file does not produce valid JSON when 'package-metadata.pl pkgmanifestjson'
is used.

Therefore, the word with the surrounding quotation marks is removed.

Signed-off-by: Florian Eckert <[email protected]>

Author: feckert

vis/Makefile

@@ -16,7 +16,7 @@ PKG_SOURCE_VERSION:=7710cce42e8d63ea114056a4a140835d4a452933
 PKG_SOURCE_URL:=https://git.open-mesh.org/vis.git
 PKG_MIRROR_HASH:=2544df816f9294e192cd6bb3592695416796fc6b254d182f1f124e686833f50d
 
-PKG_MAINTAINER:=Corinna "Elektra" Aichele <[email protected]>
+PKG_MAINTAINER:=Corinna Aichele <[email protected]>
 PKG_LICENSE:=GPL-2.0-only
 
 PKG_BUILD_PARALLEL:=1