fix packaging mark stable static build

[ilyam8]

Summary

Fixes: #15853

Test Plan

Execute updated sed command, check git diff (RELEASE_CHANNEL should be updated in both netdata-installer.sh and install-or-update.sh files)

git diff

diff --git a/netdata-installer.sh b/netdata-installer.sh
index b6e65db35..093922ac6 100755
--- a/netdata-installer.sh
+++ b/netdata-installer.sh
@@ -280,7 +280,7 @@ NETDATA_PREFIX=
 LIBS_ARE_HERE=0
 NETDATA_ENABLE_ML=""
 NETDATA_CONFIGURE_OPTIONS="${NETDATA_CONFIGURE_OPTIONS-}"
-RELEASE_CHANNEL="nightly" # valid values are 'nightly' and 'stable'
+RELEASE_CHANNEL="stable" # valid values are 'nightly' and 'stable'
 IS_NETDATA_STATIC_BINARY="${IS_NETDATA_STATIC_BINARY:-"no"}"
 while [ -n "${1}" ]; do
   case "${1}" in
diff --git a/packaging/makeself/install-or-update.sh b/packaging/makeself/install-or-update.sh
index e4c133459..60c64a257 100755
--- a/packaging/makeself/install-or-update.sh
+++ b/packaging/makeself/install-or-update.sh
@@ -27,7 +27,7 @@ fi

 STARTIT=1
 REINSTALL_OPTIONS=""
-RELEASE_CHANNEL="nightly"
+RELEASE_CHANNEL="stable"

 while [ "${1}" ]; do
   case "${1}" in

Additional Information

For users: How does this change affect me?