describe a Jenkins parameter better

Author: SethTisue

templates/default/jobs/scala/integrate/community-build.xml.erb

@@ -12,7 +12,7 @@
   jvmFlavor:           @jvmFlavorForBranch,
   params: [
     {:name => "version", :desc => "Published Scala version to build the community projects with. This should be a complete build, including modules, and library sources."},
-    {:name => "projects", :desc => "List of projects to build."},
+    {:name => "projects", :desc => "List of projects to build (comma-separated, no spaces)."},
     {:name => "scalac_opts", :desc => "Scala compiler arguments, e.g., -Yopt:l:classpath, passed to project builds."}
   ]
 ) %>

templates/default/jobs/scala/integrate/main.xml.erb

@@ -6,7 +6,7 @@
     description: "Flow that bootstraps and runs a community build",
     params: [
       {:name => "scalac_opts",          :desc => "[For community-build] Scala compiler arguments, e.g., -Yopt:l:classpath, passed to project builds."},
-      {:name => "projects",             :desc => "[For community-build] List of projects to build."},
+      {:name => "projects",             :desc => "[For community-build] List of projects to build (comma-separated, no spaces)."},
       {:name => "sbtBuildTask",         :desc => "[For bootstrap] To skip testing, set to e.g. `update`. Useful when publishing a nightly to run the community build against.", :default => "testAll"},
       {:name => "publishToSonatype",    :desc => "[For bootstrap] Set to anything but "yes" to avoid publishing to sonatype. Otherwise, release builds (tagged or SCALA_VER_BASE defined) will be published."},
       {:name => "testStability",        :desc => "[For bootstrap] To avoid running the stability test, set to e.g., `no`", :default => "yes"},