DOCSP-13571 add missing default for systemLog params

Author: andf-mongodb

source/reference/configuration-options.txt

@@ -176,19 +176,24 @@ Core Options
 
    *Type*: boolean
 
-   Run :binary:`~bin.mongos` or :binary:`~bin.mongod` in a quiet mode that attempts to limit the amount
-   of output.
+   *Default*: false
+
+   Run :binary:`~bin.mongos` or :binary:`~bin.mongod` in a quiet mode
+   that attempts to limit the amount of output.
 
-   :setting:`systemLog.quiet` is **not** recommended for production systems as it may make
-   tracking problems during particular connections much more difficult.
+   :setting:`systemLog.quiet` is **not** recommended for production
+   systems as it may make tracking problems during particular
+   connections much more difficult.
 
 
 .. setting:: systemLog.traceAllExceptions
 
    *Type*: boolean
 
-   Print verbose information for debugging. Use for additional logging for
-   support-related troubleshooting.
+   *Default*: false
+
+   Print verbose information for debugging. Use for additional logging
+   for support-related troubleshooting.