docs: change VPP_WITH_SAMPLE_PLUGIN to SAMPLE_PLUGIN in sample plugin documentation

The sample_plugin_doc.md file refers to VPP_WITH_SAMPLE_PLUGIN make
parameter, while the VPP makefile uses SAMPLE_PLUGIN instead.

Type: docs
Signed-off-by: Haggai Eran <haggai.eran@gmail.com>
Change-Id: Id11090fcdc78b77e246da48d0d890865011f1132

diff --git a/src/examples/sample-plugin/sample_plugin_doc.md b/src/examples/sample-plugin/sample_plugin_doc.md
index 501a8dc..9aaaefa 100644 (file)
--- a/src/examples/sample-plugin/sample_plugin_doc.md
+++ b/src/examples/sample-plugin/sample_plugin_doc.md
@@ -14,14 +14,14 @@ Now (re)build VPP.
 
        $ make wipe
 
-Define environmental variable 'VPP_WITH_SAMPLE_PLUGIN=yes' with a process scope
+Define environmental variable 'SAMPLE_PLUGIN=yes' with a process scope
 
-       $ VPP_WITH_SAMPLE_PLUGIN=yes make build
+       $ SAMPLE_PLUGIN=yes make build
 
 or a session scope, and build VPP. 
 
-       $ export VPP_WITH_SAMPLE_PLUGIN=yes
-       & make build
+       $ export SAMPLE_PLUGIN=yes
+       $ make build
 
 Now run VPP and make sure the plugin is loaded.