Fix some typos (#3382)

Signed-off-by: Rui Cao <ruicao@alauda.io>

roles/network_plugin/calico/tasks/check.yml

@@ -17,7 +17,7 @@
 
 - name: "Determine if calico upgrade is needed"
   block:
-    - name: "Check that calico version is enought for upgrade"
+    - name: "Check that calico version is enough for upgrade"
       assert:
         that:
           - calico_version_on_server.stdout|version_compare('v2.6.5', '>=')

roles/network_plugin/contiv/defaults/main.yml

@@ -28,7 +28,7 @@ contiv_fwd_mode: routing
 # Fabric mode: aci, aci-opflex or default
 contiv_fabric_mode: default
 
-# Defaut netmode: vxlan or vlan
+# Default netmode: vxlan or vlan
 contiv_net_mode: vxlan
 
 # Dataplane interface