[nongnu] elpa/helm 81a3ec6c18 1/6: Update helm-source documentation

[ELPA Syncer]

branch: elpa/helm
commit 81a3ec6c18b2be5cf3a71d42634d9283f6012080
Author: Thierry Volpiatto <thievol@posteo.net>
Commit: Thierry Volpiatto <thievol@posteo.net>

    Update helm-source documentation
---
 helm-source.el | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/helm-source.el b/helm-source.el
index b51fad1877..776d1b3201 100644
--- a/helm-source.el
+++ b/helm-source.el
@@ -242,8 +242,11 @@
     :initform nil
     :custom string
     :documentation
-    "  A string to explain persistent-action of this source. It also
-  accepts a function or a variable name.
+    "  A string to explain persistent-action of this source.
+  It is a facility to display what persistent action does in
+  header-line, once your source is loaded don't use it directly, it will
+  have no effect, use instead `header-line' attribute.
+  It also accepts a function or a variable name.
   It will be displayed in `header-line' or in `minibuffer' depending
   of value of `helm-echo-input-in-header-line' and 
`helm-display-header-line'.")