Remove double word "hook"

Author: melanietreitinger

docs/apis/core/hooks/index.md

@@ -126,7 +126,7 @@ If you define a hook which is _not_ in the `[component]\hook\*` namespace then y
 
 namespace mod_example;
 
-class hooks implements \core\hook\hook\discovery_agent {
+class hooks implements \core\hook\discovery_agent {
     public static function discover_hooks(): array {
         return [
             [

versioned_docs/version-4.4/apis/core/hooks/index.md

@@ -126,7 +126,7 @@ If you define a hook which is _not_ in the `[component]\hook\*` namespace then y
 
 namespace mod_example;
 
-class hooks implements \core\hook\hook\discovery_agent {
+class hooks implements \core\hook\discovery_agent {
     public static function discover_hooks(): array {
         return [
             [

versioned_docs/version-5.0/apis/core/hooks/index.md

@@ -126,7 +126,7 @@ If you define a hook which is _not_ in the `[component]\hook\*` namespace then y
 
 namespace mod_example;
 
-class hooks implements \core\hook\hook\discovery_agent {
+class hooks implements \core\hook\discovery_agent {
     public static function discover_hooks(): array {
         return [
             [