fix(aggregation-grouping-summarizing): Improve count() (#5667)

* fix(aggregation-grouping-summarizing): Improve count()

- Add headline for main "Count Records"
- More standard version related information as admonition
- Small changes

* Update content/200-orm/200-prisma-client/100-queries/056-aggregation-grouping-summarizing.mdx

---------

Co-authored-by: Jon Harrell <[email protected]>

content/200-orm/200-prisma-client/100-queries/056-aggregation-grouping-summarizing.mdx

@@ -329,20 +329,19 @@ Both `distinct` and `groupBy` group records by one or more unique field values.
 
 ## Count
 
-Use [`count`](/orm/reference/prisma-client-reference#count) to count the number of records or non-`null` field values. The following example query counts all users:
+### Count records
+
+Use [`count()`](/orm/reference/prisma-client-reference#count) to count the number of records or non-`null` field values. The following example query counts all users:
 
 ```ts
 const userCount = await prisma.user.count()
 ```
 
 ### Count relations
 
-The ability to count relations is available in version [3.0.1](https://github.com/prisma/prisma/releases/3.0.1) and later.
-
 <Admonition type="info">
 
-**For versions before 3.0.1**<br />
-You need to add the [preview feature](/orm/reference/preview-features/client-preview-features#enabling-a-prisma-client-preview-feature) `selectRelationCount` and then run `prisma generate`.
+This feature is generally available in version [3.0.1](https://github.com/prisma/prisma/releases/3.0.1) and later. To use this feature in versions before 3.0.1 the [Preview feature](/orm/reference/preview-features/client-preview-features#enabling-a-prisma-client-preview-feature) `selectRelationCount` will need to be enabled.
 
 </Admonition>
 
@@ -380,7 +379,7 @@ The `_count` parameter:
 - Can be used inside a top-level `include` _or_ `select`
 - Can be used with any query that returns records (including `delete`, `update`, and `findFirst`)
 - Can return [multiple relation counts](#return-multiple-relation-counts)
-- From version 4.3.0, can [filter relation counts](#filter-the-relation-count)
+- Can [filter relation counts](#filter-the-relation-count) (from version 4.3.0)
 
 #### Return a relations count with <inlineCode>include</inlineCode>
 
@@ -415,7 +414,7 @@ const usersWithCount = await prisma.user.findMany({
 
 #### Return a relations count with `select`
 
-The following query uses `select` to return each user's post count and no other fields:
+The following query uses `select` to return each user's post count _and no other fields_:
 
 <CodeWithResult>
 <cmd>