ci - build:announce - fix link

.circleci/config.yml

@@ -110,11 +110,11 @@ jobs:
             CIRCLE_PR_NUMBER="${CIRCLE_PR_NUMBER:-${CIRCLE_PULL_REQUEST##*/}}"
             SHORT_SHA1=$(echo $CIRCLE_SHA1 | cut -c 1-7)
             BUILD_LINK_BASE="https://$CIRCLE_BUILD_NUM-42009758-gh.circle-artifacts.com/0/builds"
-            MASCARA="BUILD_LINK_BASE/mascara/home.html"
-            CHROME="BUILD_LINK_BASE/chrome.zip"
-            FIREFOX="BUILD_LINK_BASE/firefox.zip"
-            OPERA="BUILD_LINK_BASE/opera.zip"
-            EDGE="BUILD_LINK_BASE/edge.zip"
+            MASCARA="$BUILD_LINK_BASE/mascara/home.html"
+            CHROME="$BUILD_LINK_BASE/chrome.zip"
+            FIREFOX="$BUILD_LINK_BASE/firefox.zip"
+            OPERA="$BUILD_LINK_BASE/opera.zip"
+            EDGE="$BUILD_LINK_BASE/edge.zip"
             COMMENT_MAIN="Builds ready [$SHORT_SHA1]: [mascara][mascara], [chrome][chrome], [firefox][firefox], [edge][edge], [opera][opera]"
             COMMENT_LINKS="[mascara]:$MASCARA\n[chrome]:$CHROME\n[firefox]:$FIREFOX\n[opera]:$OPERA\n[edge]:$EDGE\n"
             COMMENT_BODY="$COMMENT_MAIN\n\n$COMMENT_LINKS"