DOCSP-35886 compat tables and deprecated definition (#64)

Updated the compatibility tables to be words instead of symbols, and added a note to define what deprecation means.

Author: kyuan-mongodb

source/includes/deprecated-definition.rst

@@ -0,0 +1,13 @@
+.. note::
+
+   MongoDB marks a version as deprecated when we no longer support it.
+   While a deprecated version might still work with the corresponding
+   |onprem| release, we will remove the support for this version in the
+   future. |mdb-support| doesn't recommend using this version and
+   provides limited assistance for using this version with |onprem|.
+   
+   To learn more, see `MongoDB Legacy Support Policy
+   <https://www.mongodb.com/legal/support-policy/legacy>`__ and 
+   `MongoDB Software Lifecycle Schedules for Ops Manager
+   <https://www.mongodb.com/legal/support-policy/lifecycles>`__.
+   

source/includes/list-tables/supported-backingdb-versions.rst

@@ -11,16 +11,15 @@
 
    * - |onprem| 7.0
      - 
-     - :icon-fa5:`check-square`
-     - :icon-fa5:`check-circle`
-     - :icon-fa5:`check-circle`
+     - Deprecated
+     - Supported
+     - Supported
 
    * - |onprem| 6.0
-     - :icon-fa5:`check-square`
-     - :icon-fa5:`check-circle`
-     - :icon-fa5:`check-circle`
+     - Deprecated
+     - Supported
+     - Supported
      - 
 
-
-:icon-fa5:`check-circle` Supported
-:icon-fa5:`check-square` Deprecated
+.. include:: /includes/deprecated-definition.rst
+  

source/includes/list-tables/supported-mongodb-versions.rst

@@ -8,32 +8,31 @@
      - |onprem| 6.0
 
    * - MongoDB 7.0
-     - :icon-fa5:`check-circle`
+     - Supported
      - 
 
    * - MongoDB 6.0
-     - :icon-fa5:`check-circle`
-     - :icon-fa5:`check-circle`
+     - Supported
+     - Supported
 
    * - MongoDB 5.0
-     - :icon-fa5:`check-circle`
-     - :icon-fa5:`check-circle`
+     - Supported
+     - Supported
 
    * - MongoDB 4.4
-     - :icon-fa5:`check-circle`
-     - :icon-fa5:`check-circle`
+     - Supported
+     - Supported
 
    * - MongoDB 4.2
-     - :icon-fa5:`check-square`
-     - :icon-fa5:`check-circle`
+     - Deprecated
+     - Supported
 
    * - MongoDB 4.0
      - 
-     - :icon-fa5:`check-square`
+     - Deprecated
 
    * - MongoDB 3.6
      - 
      - 
 
-:icon-fa5:`check-circle` Supported
-:icon-fa5:`check-square` Deprecated
+.. include:: /includes/deprecated-definition.rst

source/reference/mongodb-compatibility.txt

@@ -24,7 +24,6 @@ The following table displays the version compatibility. The MongoDB
 edition can be either Community or Enterprise.
 
 .. include:: /includes/list-tables/supported-mongodb-versions.rst
-  
 
 Version support covers the full release series from the first to the
 last release.