Update broken links in README. (#117)

Author: vpetrovykh

README.md

@@ -13,16 +13,12 @@
   <a href="https://discord.gg/tM4EpAaeSq">
     <img src="https://discord.com/api/guilds/841451783728529451/widget.png" alt="Discord">
   </a>
-  
+
   <p align="center">
-    Gel.Net is the official .NET driver for the <a href="https://geldata.com">Gel</a> database.
+    Gel.Net is the official .NET driver for the <a href="https://www.geldata.com">Gel</a> database.
   </p>
 </p>
 
-## Documentation
-
-Documentation for the dotnet driver can be found [here](https://www.geldata.com/docs/clients/dotnet).
-
 ## Installation
 
 Gel.Net is distributed through the NuGet package manager.
@@ -38,9 +34,8 @@ $ dotnet add package Gel.Net.Driver
 ### Creating a client
 
 Clients are what allow your code to talk and interface with Gel. The
-[`GelClientPool`](https://www.geldata.com/docs/clients/dotnet/api#Gel.GelClientPool)
-class contains a pool of connections and numerous abstractions for executing
-queries with ease:
+`GelClientPool` class contains a pool of connections and numerous abstractions
+for executing queries with ease:
 
 ```cs
 using Gel;
@@ -51,11 +46,9 @@ var client = new GelClientPool();
 ### Client configuration
 
 `GelClientPool` will automatically determine how to connect to your Gel
-instance by resolving [Gel Projects](https://www.geldata.com/docs/intro/projects).
+instance by resolving [Gel Projects](https://docs.geldata.com/learn/projects).
 For specifying custom connection arguments, considering checking out the
-[`GelConnection`](https://www.geldata.com/docs/clients/dotnet/connection_parameters#GelConnection)
-class. Here's an example of using the [`.Create()`](https://www.geldata.com/docs/clients/dotnet/connection_parameters#GelConnection.Create-Options?)
-method:
+`GelConnection` class. Here's an example of using the `.Create()` method:
 
 ```cs
 using Gel;
@@ -74,9 +67,10 @@ operations are performed asynchronously.
 
 Queries are executed through the `GelClientPool` by using different helper
 methods. Your choice of method is dependent on the kind of query you're making,
-better known as [cardinality](https://www.geldata.com/docs/clients/dotnet/index#cardinality-and-return-types).
+better known as [cardinality](https://docs.geldata.com/reference/edgeql/sets#everything-is-a-set).
 
-Query helper methods will expect a generic `T` type which is the [.NET version of an Gel type](https://www.geldata.com/docs/clients/dotnet/datatypes#datatypes):
+Query helper methods will expect a generic `T` type which is the .NET version
+of an Gel type:
 
 ```cs
 var result = await client.QueryAsync<long>("select 2 + 2"); // returns 4
@@ -97,7 +91,7 @@ check them out to see Gel.Net in action!
 
 If you're building Gel.Net from source, you will need to download the
 [.NET 8 SDK](https://dotnet.microsoft.com/en-us/download).
-  
+
 Once you have the SDK installed, you can then run `dotnet build` in the root
 directory of the project: