fix(prisma-schema): improve documentation readability (#7363)

* fix(overview): author & authorId cannot be optional

* fix(data-model): post & postId cannot be optional

* fix(indexes): update inline comment placements

---------

Co-authored-by: Aman Varshney <[email protected]>

Author: Hephaest

content/200-orm/100-prisma-schema/10-overview/index.mdx

@@ -59,8 +59,8 @@ model Post {
   updatedAt DateTime @updatedAt
   published Boolean  @default(false)
   title     String   @db.VarChar(255)
-  author    User?    @relation(fields: [authorId], references: [id])
-  authorId  Int?
+  author    User     @relation(fields: [authorId], references: [id])
+  authorId  Int
 }
 
 enum Role {
@@ -97,7 +97,7 @@ model Post {
   updatedAt DateTime @updatedAt
   published Boolean  @default(false)
   title     String
-  author    User?    @relation(fields: [authorId], references: [id])
+  author    User     @relation(fields: [authorId], references: [id])
   authorId  String   @db.ObjectId
 }
 

content/200-orm/100-prisma-schema/20-data-model/10-models.mdx

@@ -407,8 +407,8 @@ model Comment {
   id     Int
   // Other fields
   //highlight-next-line
-  post   Post? @relation(fields: [postId], references: [id]) // A comment can have one post
-  postId Int?
+  post   Post @relation(fields: [postId], references: [id]) // A comment can have one post
+  postId Int
 }
 ```
 
@@ -424,11 +424,11 @@ model Post {
 }
 
 model Comment {
-  id     String  @id @default(auto()) @map("_id") @db.Objectid
+  id     String @id @default(auto()) @map("_id") @db.Objectid
   // Other fields
   //highlight-next-line
-  post   Post?   @relation(fields: [postId], references: [id]) // A comment can have one post
-  postId String? @db.ObjectId
+  post   Post   @relation(fields: [postId], references: [id]) // A comment can have one post
+  postId String @db.ObjectId
 }
 ```
 

content/200-orm/100-prisma-schema/20-data-model/30-indexes.mdx

@@ -206,9 +206,9 @@ model Example {
   id    Int  @id
   value Json
   //    ^ field type matching the operator class
-  //                  ^ operator class      ^ index type
 
   @@index([value(ops: JsonbPathOps)], type: Gin)
+  //                  ^ operator class      ^ index type
 }
 ```
 
@@ -344,9 +344,9 @@ model Example {
   id    Int @id
   value Int
   //    ^ field type matching the operator class
-  //                  ^ operator class      ^ index type
 
   @@index([value(ops: Int4BloomOps)], type: Brin)
+  //                  ^ operator class      ^ index type
 }
 ```