Document both LINQ comprehension syntax and normal method calls

Usage examples with the LINQ method syntax would be helpful.

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#### Document Details

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* ID: adc3489d-7824-f89a-733c-78b069c73bb7
* Version Independent ID: 42872efd-b9b9-52bf-51c2-6df0b85ce266
* Content: [DbFunctionsExtensions.Like Method (Microsoft.EntityFrameworkCore)](https://docs.microsoft.com/en-us/dotnet/api/microsoft.entityframeworkcore.dbfunctionsextensions.like?view=efcore-2.1#Microsoft_EntityFrameworkCore_DbFunctionsExtensions_Like_Microsoft_EntityFrameworkCore_DbFunctions_System_String_System_String_System_String_)
* Content Source: [dotnet/xml/Microsoft.EntityFrameworkCore/DbFunctionsExtensions.xml](https://github.com/aspnet/EntityFramework.ApiDocs/blob/live/dotnet/xml/Microsoft.EntityFrameworkCore/DbFunctionsExtensions.xml)
* Product: **ef-core-api**
* GitHub Login: @dotnet-bot
* Microsoft Alias: **divega**