fix: typos, formatting, etc (#918)

docs/content/concepts.mdx

@@ -207,7 +207,7 @@ A **user** is an entity in the system that can be related to an object.
 
 </summary>
 
-A user is is a combination of a [type](#what-is-a-type), an identifier, and an optional relation.
+A user is a combination of a [type](#what-is-a-type), an identifier, and an optional relation.
 
 For example,
 
@@ -378,7 +378,7 @@ A relationship tuple consists of:
 - an **[object](#what-is-an-object)**, e.g `repo:auth0/express_jwt`, `domain:auth0.com` or `channel:marketing`
 - a **[condition](#what-is-a-condition)** (optional), e.g. `{"condition": "in_allowed_ip_range", "context": {...}}`
 
-An [authorization model](#what-is-an-authorization-model), together with relationship tuples, determinate whether a [relationship](#what-is-a-relationship) exists between a [user](#what-is-a-user) and an [object](#what-is-an-object).
+An [authorization model](#what-is-an-authorization-model), together with relationship tuples, determine whether a [relationship](#what-is-a-relationship) exists between a [user](#what-is-a-user) and an [object](#what-is-an-object).
 
 Relationship tuples are usually shown in the following format:
 
@@ -443,7 +443,7 @@ An [authorization model](#what-is-an-authorization-model), together with [relati
 
 ## What Are Direct And Implied Relationships?
 
-A **direct relationship** (R) between user X and object Y means the relationship tuple (user=X, relation=R, object=Y) exists, and the <ProductName format={ProductNameFormat.ShortForm}/> authorization model for that relation allows the direct relationship because of [direct relationship type restrictions](./configuration-language.mdx#direct-relationship-type-restrictions)).
+A **direct relationship** (R) between user X and object Y means the relationship tuple (user=X, relation=R, object=Y) exists, and the <ProductName format={ProductNameFormat.ShortForm}/> authorization model for that relation allows the direct relationship because of [direct relationship type restrictions](./configuration-language.mdx#direct-relationship-type-restrictions).
 
 An **implied (or computed) relationship** (R) exists between user X and object Y if user X is related to an object Z that is in a direct or implied relationship with object Y, and the <ProductName format={ProductNameFormat.ShortForm}/> authorization model allows it.
 
@@ -466,7 +466,7 @@ An **implied (or computed) relationship** (R) exists between user X and object Y
       relationshipTuples={[
         {
           _description: 'Everyone (`*`) of type user is directly related to the document',
-          user: '*',
+          user: 'user:*',
           relation: 'viewer',
           object: 'document:new-roadmap',
         },
@@ -482,7 +482,7 @@ An **implied (or computed) relationship** (R) exists between user X and object Y
           object: 'document:new-roadmap',
         },
         {
-          _description: 'AND Anne of type user is a member of a userset (e.g. team:product#member)',
+          _description: 'AND Anne of type user is a member of the userset team:product#member',
           user: 'user:anne',
           relation: 'member',
           object: 'team:product#member',
@@ -578,7 +578,7 @@ A **list objects request** is a call to the <ProductName format={ProductNameForm
 
 </summary>
 
-List object requests are completed using the `listobjects` methods in the <ProductName format={ProductNameFormat.ShortForm}/> SDKs ([JavaScript SDK](https://www.npmjs.com/package/@openfga/sdk)/[Go SDK](https://github.com/openfga/go-sdk)/[.NET SDK](https://www.nuget.org/packages/OpenFga.Sdk)) by manually calling the [list objects endpoint](/api/service#Relationship%20Queries/ListObjects) using curl or in your code.
+List objects requests are completed using the `listobjects` methods in the <ProductName format={ProductNameFormat.ShortForm}/> SDKs ([JavaScript SDK](https://www.npmjs.com/package/@openfga/sdk)/[Go SDK](https://github.com/openfga/go-sdk)/[.NET SDK](https://www.nuget.org/packages/OpenFga.Sdk)) by manually calling the [list objects endpoint](/api/service#Relationship%20Queries/ListObjects) using curl or in your code.
 
 The list objects endpoint responds with a list of objects for a given type that the user has the specified relationship with.
 
@@ -632,7 +632,7 @@ For more information, see the [ListUsers API Reference](/api/service#Relationshi
 
 ## What Are Contextual Tuples?
 
-Contextual tuples are tuples that can be added to a check request and only exist within the context of that particular request.
+Contextual tuples are tuples that can be added to a Check request, a ListObjects request, a ListUsers request, or an Expand request. They only exist within the context of that particular request and are not persisted in the datastore.
 
 </summary>