doc: fix typo ndoe -> node

Change-Id: Ib78b5de45b93a7534163de2cd91211e9be75445d
diff --git a/doc/manuals/chapters/configuration.adoc b/doc/manuals/chapters/configuration.adoc
index e87e5b0..5314d10 100644
--- a/doc/manuals/chapters/configuration.adoc
+++ b/doc/manuals/chapters/configuration.adoc
@@ -101,7 +101,7 @@
 ----
 <1> Change into privileged mode
 <2> Enter the interactive configuration mode
-<3> Enter the config ndoe of the GGSN instance `ggsn0`
+<3> Enter the config node of the GGSN instance `ggsn0`
 <4> Take the GGSN instance out of shutdown
 
 
@@ -121,7 +121,7 @@
 ----
 <1> Change into privileged mode
 <2> Enter the interactive configuration mode
-<3> Enter the config ndoe of the GGSN instance `ggsn0`
+<3> Enter the config node of the GGSN instance `ggsn0`
 <4> Shut down the GGSN instance
 
 
@@ -215,8 +215,8 @@
 ----
 <1> Change into privileged mode
 <2> Enter the interactive configuration mode
-<3> Enter the config ndoe of the GGSN instance `ggsn0`
-<4> Enter the config ndoe of the APN `internet`
+<3> Enter the config node of the GGSN instance `ggsn0`
+<4> Enter the config node of the APN `internet`
 <5> Take the APN out of shutdown
 
 
@@ -237,8 +237,8 @@
 ----
 <1> Change into privileged mode
 <2> Enter the interactive configuration mode
-<3> Enter the config ndoe of the GGSN instance `ggsn0`
-<4> Enter the config ndoe of the APN `internet`
+<3> Enter the config node of the GGSN instance `ggsn0`
+<4> Enter the config node of the APN `internet`
 <5> Shut down the APN
 
 [[ggsn_no_root]]