Capitalized "arguments" to adhere to new code standards.

Capitalized "arguments" in places it wasn't.
This commit is style changes only.

Change-Id: I079cd9dbd4bd9aef630ba871c4e1b21f38efb30c
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/tests/test_led.robot b/tests/test_led.robot
index 1c2f442..51e3eb5 100644
--- a/tests/test_led.robot
+++ b/tests/test_led.robot
@@ -198,7 +198,7 @@
    should be true   ${ON_VALUE} > ${MIN_TOGGLE_VALUE} and ${OFF_VALUE} > ${MIN_TOGGLE_VALUE}
 
 Get LED State
-   [arguments]    ${args}
+   [Arguments]    ${args}
    ${data}=   create dictionary   data=@{EMPTY}
    ${resp}=   OpenBMC Post Request   ${LED_CONTROL}${args}/action/GetLedState   data=${data}
    should be equal as strings   ${resp.status_code}   ${HTTP_OK}
@@ -206,7 +206,7 @@
    [return]    ${json['data'][1]}
 
 Set On
-   [arguments]    ${args}
+   [Arguments]    ${args}
    ${data}=   create dictionary   data=@{EMPTY}
    ${resp}=   OpenBMC Post Request   ${LED_CONTROL}${args}/action/setOn   data=${data}
    should be equal as strings   ${resp.status_code}   ${HTTP_OK}
@@ -214,7 +214,7 @@
    should be equal as integers   ${json['data']}   0
 
 Set Off
-   [arguments]    ${args}
+   [Arguments]    ${args}
    ${data}=   create dictionary   data=@{EMPTY}
    ${resp}=   OpenBMC Post Request   ${LED_CONTROL}${args}/action/setOff   data=${data}
    should be equal as strings   ${resp.status_code}   ${HTTP_OK}
@@ -222,7 +222,7 @@
    should be equal as integers   ${json['data']}   0
 
 Set Blink Fast
-   [arguments]    ${args}
+   [Arguments]    ${args}
    ${data}=   create dictionary   data=@{EMPTY}
    ${resp}=   OpenBMC Post Request   ${LED_CONTROL}${args}/action/setBlinkFast   data=${data}
    should be equal as strings   ${resp.status_code}   ${HTTP_OK}
@@ -230,7 +230,7 @@
    should be equal as integers   ${json['data']}   0
 
 Set Blink Slow
-   [arguments]    ${args}
+   [Arguments]    ${args}
    ${data}=   create dictionary   data=@{EMPTY}
    ${resp}=   OpenBMC Post Request   ${LED_CONTROL}${args}/action/setBlinkSlow   data=${data}
    should be equal as strings   ${resp.status_code}   ${HTTP_OK}