Added macOS 11 to target environment in project plan

Change-Id: I54b8b1ef87fcc05293c5f791f1eed7e5380bc31f
Signed-off-by: Lakshmi Shanmugam <lshanmug@in.ibm.com>
diff --git a/development/plans/eclipse_project_plan_4_18.xml b/development/plans/eclipse_project_plan_4_18.xml
index c83d201..46be476 100644
--- a/development/plans/eclipse_project_plan_4_18.xml
+++ b/development/plans/eclipse_project_plan_4_18.xml
@@ -268,10 +268,10 @@
 		
 		<!-- ************ Mac ************** -->
 		<tr class="c0">
-			<td rowspan="1">Apple Mac OS X</td>
+			<td rowspan="1">Apple macOS</td>
 			<td rowspan="2">
-				10.14<br/>
-				10.15
+				10.15<br/>
+				11
 			</td>
 			<td rowspan="1">x86 64-bit</td>
 			<td rowspan="1">