Add space after comma for placeholder text (#25931)

public/app/features/admin/UserListAdminPage.tsx

@@ -45,7 +45,7 @@ const UserListAdminPageUnConnected: React.FC<Props> = props => {
               <Input
                 width={40}
                 type="text"
-                placeholder="Search user by login,email or name"
+                placeholder="Search user by login, email or name"
                 tabIndex={1}
                 autoFocus={true}
                 value={props.query}

public/app/features/users/UsersActionBar.tsx

@@ -41,7 +41,7 @@ export class UsersActionBar extends PureComponent<Props> {
             inputClassName="gf-form-input width-20"
             value={searchQuery}
             onChange={setUsersSearchQuery}
-            placeholder="Search user by login,email or name"
+            placeholder="Search user by login, email or name"
           />
           {pendingInvitesCount > 0 && (
             <div style={{ marginLeft: '1rem' }}>

public/app/features/users/__snapshots__/UsersActionBar.test.tsx.snap

@@ -11,7 +11,7 @@ exports[`Render should render component 1`] = `
       inputClassName="gf-form-input width-20"
       labelClassName="gf-form--has-input-icon"
       onChange={[MockFunction]}
-      placeholder="Search user by login,email or name"
+      placeholder="Search user by login, email or name"
       value=""
     />
     <div
@@ -32,7 +32,7 @@ exports[`Render should render pending invites button 1`] = `
       inputClassName="gf-form-input width-20"
       labelClassName="gf-form--has-input-icon"
       onChange={[MockFunction]}
-      placeholder="Search user by login,email or name"
+      placeholder="Search user by login, email or name"
       value=""
     />
     <div
@@ -77,7 +77,7 @@ exports[`Render should show external user management button 1`] = `
       inputClassName="gf-form-input width-20"
       labelClassName="gf-form--has-input-icon"
       onChange={[MockFunction]}
-      placeholder="Search user by login,email or name"
+      placeholder="Search user by login, email or name"
       value=""
     />
     <div
@@ -103,7 +103,7 @@ exports[`Render should show invite button 1`] = `
       inputClassName="gf-form-input width-20"
       labelClassName="gf-form--has-input-icon"
       onChange={[MockFunction]}
-      placeholder="Search user by login,email or name"
+      placeholder="Search user by login, email or name"
       value=""
     />
     <div