Fix spelling mistakes in comments and descriptions

Thanks, codespell!

plugins/snmp/snmp__airport

@@ -71,7 +71,7 @@ def usage():
 
 
 def parseName(name):
-    """Examing argv[0] (i.e. the name of this script) for the hostname we should
+    """Examining argv[0] (i.e. the name of this script) for the hostname we should
     be talking to and the type of check we want to run. The hostname should be
     a valid, resolvable hostname, or an IP address. The command can be any of:
         * clients - number of connected wireless clients

plugins/snmp/snmp__cyberpower

@@ -78,7 +78,7 @@ charge.max 100
 
 	print "multigraph cyberpower_runtime
 graph_title CyberPower UPS Runtime
-graph_info This graph shows expected runtime informatiom.
+graph_info This graph shows expected runtime information.
 graph_category sensors
 graph_vlabel minutes
 ";

plugins/snmp/snmp__fn

@@ -138,9 +138,9 @@ config()
   echo "graph_title $UNIT - SSLvpn Sessions"
   echo 'graph_category fw'
   echo 'graph_vlabel Sessions/Users'
-  echo 'graph_info Loged in users with SSLvpn (WebSession or Tunnel-Mode)'
+  echo 'graph_info Logged in users with SSLvpn (WebSession or Tunnel-Mode)'
   echo 'fortiuser.label Users'
-  echo 'fortiuser.info Loged in SSLvpn users'
+  echo 'fortiuser.info Logged in SSLvpn users'
   echo 'fortiwebs.label WebSessions'
   echo 'fortiwebs.info Active SSLvpn WebSessions'
   echo 'fortiatun.label ActiveTunnels'

plugins/snmp/snmp__if_combined

@@ -95,7 +95,7 @@ Should support indexing by
 Pulling in a user definable set of ifName/ifDescr/ifAlias for textual
 description and even graph_title would also be nice.
 
-IFF we get a patch to support the .oldname attribute then we may use
+If we get a patch to support the .oldname attribute then we may use
 that to let the operator change the indexing dynamically without data
 loss.