M47689: Multiple changes

Translator has reported possible source content issue. 
Description: We fixed three issues in this commit
1. "Begins with" word was put as bold word in order to be more clear in his meaning.
2. Fix second example of Wildcards use and also escape them as they should be displayed in article

Author: v-maudel

powerapps-docs/user/lookup-field.md

@@ -49,9 +49,9 @@ To search a lookup, select the textbox and type your search criteria. If recent
   > ![Browse a lookup field](media/MRU.png "Browse a lookup field")  
   
 >[!NOTE]   
-> The default search result for lookup search is, begins with. This means results include records that begin with a specific word. For example, if you want to search for **Alpine Ski House**, type **alp** in the search box; if you type **ski**, the record will not show up in the search result.
+> The default search result for lookup search is, **begins with**. This means results include records that begin with a specific word. For example, if you want to search for **Alpine Ski House**, type **alp** in the search box; if you type **ski**, the record will not show up in the search result.
 >
-> For a wildcard search use asterisks: For example, type *ski or *ski.
+> For a wildcard search use asterisks: For example, type \*ski or \*ski\*.
 
 ## Browse in a lookup field
 To browse a lookup, select the lookup icon (magnifying glass). A full list of items will be shown in the dropdown.