Fix docs comments in some scripts

bin/bscript

@@ -7,7 +7,7 @@
 #
 # Usage:
 #
-#     run-script script-file [options] [args]
+#     bscript script-file [options] [args]
 #
 #   script-file    : a JSON API script
 #   options        : script options, see bubble.main.BubbleScriptOptions (and parent classes) for more info

bin/run.sh

@@ -19,7 +19,7 @@
 #
 #   BUBBLE_ENV      : env file to load, used when performing handlebars substitutions on entities marked
 #                        with `"_subst": true` JSON attribute. Default is ~/.bubble.env
-#   BUBBLE_JVM_OPTS : Java options. Defaults to "-Xmx4096 -Xms4096"
+#   BUBBLE_JVM_OPTS : Java options. Defaults to either "-Xmx512m -Xms512m" when no command is set, else "-Xmx64m -Xms2m"
 #   BUBBLE_JAR      : location of bubble uberjar. Default is to assume there is exactly one bubble-server*.jar file in a
 #                       directory named "target" that is in the same directory as this script
 #