Regenerate snippet .md files

Run `./generate-md.py` to update generated markdown files after
semi-manual changes made in the previous commit.
This commit serves as a gist of fixed issues found in snippets.

(it's easier to review 250 lines diff rather than 31k lines diff, isn't it?)

qdrant-landing/content/documentation/headless/snippets/inference/cohere-upsert/generated/go.md

@@ -1,7 +1,6 @@
 ```go
 import (
 	"context"
-	"time"
 
 	"github.com/qdrant/go-client/qdrant"
 )
@@ -13,7 +12,7 @@ client, err := qdrant.NewClient(&qdrant.Config{
     UseTLS: true,
 })
 
-client.Upsert(ctx, &qdrant.UpsertPoints{
+client.Upsert(context.Background(), &qdrant.UpsertPoints{
 	CollectionName: "{collection_name}",
 	Points: []*qdrant.PointStruct{
 		{

qdrant-landing/content/documentation/headless/snippets/inference/cohere-upsert/generated/rust.md

@@ -1,6 +1,6 @@
 ```rust
 use qdrant_client::{
-    Payload, Qdrant, QdrantError,
+    Payload, Qdrant,
     qdrant::{Document, PointStruct, UpsertPointsBuilder},
 };
 use std::collections::HashMap;