change en sentences in Wiki Management home and App settings

resource/locales/en-US/admin/admin.json

@@ -1,9 +1,9 @@
 {
   "admin_top": {
     "management_wiki": "Management Wiki",
-    "system_information": "System Information",
+    "system_information": "System information",
     "wiki_administrator": "Only wiki administrator can access this page",
-    "assign_administrator": "You can assign the selected user to be a wiki administrator on the User Management page using the 'Give Admin Access' button",
+    "assign_administrator": "You can assign the selected user to be a wiki administrator on the User Management page using the 'Give admin access' button",
     "list_of_installed_plugins": "List of installed plugins",
     "package_name": "Package name",
     "specified_version": "Specified version",
@@ -21,8 +21,8 @@
     "siteurl_help": "Site full URL beginning from <code>http://</code> or <code>https://</code>.",
     "confidential_name": "Confidential name",
     "confidential_example": "ex): internal use only",
-    "default_language": "Default Language for new users",
-    "file_uploading": "File Uploading",
+    "default_language": "Default language for new users",
+    "file_uploading": "File uploading",
     "enable_files_except_image": "Enabling this option will allow upload of any file type. Without this option, only image file upload is supported.",
     "attach_enable": "You can attach files other than image files if you enable this option.",
     "update": "Update",
@@ -244,7 +244,7 @@
       "your_own": "You cannot deactivate your own account",
       "remove_admin_access": "Remove Admin Access",
       "cannot_remove": "You cannot remove yourself from administrator",
-      "give_admin_access": "Give Admin Access"
+      "give_admin_access": "Give admin access"
     },
     "reset_password": "Reset Password",
     "reset_password_modal": {

src/client/js/components/Admin/App/AwsSetting.jsx

@@ -103,7 +103,7 @@ class AwsSetting extends React.Component {
 
         <div className="row mb-5">
           <label className="col-xs-3 control-label">
-            Access Key ID
+            Access key ID
           </label>
           <div className="col-xs-6">
             <input
@@ -119,7 +119,7 @@ class AwsSetting extends React.Component {
 
         <div className="row mb-5">
           <label className="col-xs-3 control-label">
-            Secret Access Key
+            Secret access key
           </label>
           <div className="col-xs-6">
             <input