Typo fixes for infiniband GUID

- Remove underscore in the Area description of the entry
- Modify the capability name to be camelCase instead of underscores
  to be consistent with other capabilities (e.g `portMappings`, `ipRanges`)

As there was no CNI released and no implementations of this capability
(That i know of) i reckon we can do the attribute name adjustment.

Signed-off-by: Adrian Chiris <adrianc@mellanox.com>

CONVENTIONS.md

@@ -63,7 +63,7 @@ But the runtime would fill in the mappings so the plugin itself would receive so
 | dns | Dynamically configure dns according to runtime | `dns` | Dictionary containing a list of `servers` (string entries), a list of `searches` (string entries), a list of `options` (string entries). <pre>{ <br> "searches" : [ "internal.yoyodyne.net", "corp.tyrell.net" ] <br> "servers": [ "8.8.8.8", "10.0.0.10" ] <br />} </pre> | kubernetes | CNI `win-bridge` plugin, CNI `win-overlay` plugin |
 | ips | Dynamically allocate IPs for container interface. Runtime which has the ability of address allocation can pass these to plugins.  | `ips` | A list of `IP` (string entries). <pre> [ "10.10.0.1/24", "3ffe:ffff:0:01ff::1/64" ] </pre> | none | CNI `static` plugin |
 | mac | Dynamically assign MAC. Runtime can pass this to plugins which need MAC as input. | `mac` | `MAC` (string entry). <pre> "c2:11:22:33:44:55" </pre> | none | CNI `tuning` plugin |
-| infiniband_guid | Dynamically assign Infiniband GUID to network interface. Runtime can pass this to plugins which need Infiniband GUID as input. | `infiniband_guid` | `GUID` (string entry). <pre> "c2:11:22:33:44:55:66:77" </pre> | none | CNI [`ib-sriov-cni`](https://github.com/Mellanox/ib-sriov-cni) plugin |
+| infiniband guid | Dynamically assign Infiniband GUID to network interface. Runtime can pass this to plugins which need Infiniband GUID as input. | `infinibandGUID` | `GUID` (string entry). <pre> "c2:11:22:33:44:55:66:77" </pre> | none | CNI [`ib-sriov-cni`](https://github.com/Mellanox/ib-sriov-cni) plugin |
 | device id | Provide device identifier which is associated with the network to allow the CNI plugin to perform device dependent network configurations. | `deviceID` | `deviceID` (string entry). <pre> "0000:04:00.5" </pre> | none | CNI `host-local` plugin |
 
 ## "args" in network config