Fixed management.md for typo

Signed-off-by: Batuhan Apaydın <batuhan.apaydin@trendyol.com>

docs/content/management.md

@@ -39,7 +39,7 @@ management APIs that enable:
 * Dynamic agent configuration (Discovery)
 
 By configuring and implementing these management APIs you can unify control and
-visiblity over OPAs in your environments. OPA does not provide a control plane
+visibility over OPAs in your environments. OPA does not provide a control plane
 service out-of-the-box today.
 
 <!--- source: https://docs.google.com/drawings/d/1-08mHgUN5oy2phLJ6MOr7j3e0iguxg_X__3VH321iLc/edit?usp=sharing --->
@@ -1013,4 +1013,4 @@ In practice, discovery services do not change frequently. These configuration se
 immutable to avoid accidental configuration errors rendering OPA unable to discover a new configuration.
 If the discovered configuration changes the `discovery` or `labels` sections,
 those changes are ignored. If the discovered configuration changes the discovery service,
-an error will be logged.
+an error will be logged.