Capitalized "[Return]" to adhere to code standards.

Capitalized "[Return]" in places it wasn't.
This commit is style changes only.

Change-Id: I218c87c136ead38af3e310aa2711efaa00df2ca4
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/extended/obmc_boot_test.robot b/extended/obmc_boot_test.robot
index de7a4f6..b17e0c6 100644
--- a/extended/obmc_boot_test.robot
+++ b/extended/obmc_boot_test.robot
@@ -260,7 +260,7 @@
     ...  **ERROR** BMC not in state to power on or off: "${power}"  AND
     ...  Fatal Error
 
-    [return]  ${boot}
+    [Return]  ${boot}
 
 ###############################################################################
 
@@ -277,7 +277,7 @@
     # selecting randomly.
     ${chosen}=  Set Variable  @{power_on_choices}[0]
 
-    [return]  ${chosen}
+    [Return]  ${chosen}
 
 ###############################################################################
 
@@ -294,7 +294,7 @@
     # selecting randomly.
     ${chosen}=  Set Variable  @{power_off_choices}[0]
 
-    [return]  ${chosen}
+    [Return]  ${chosen}
 
 ###############################################################################