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/distance-matrix/basic/generated/go.md

@@ -12,7 +12,7 @@ client, err := qdrant.NewClient(&qdrant.Config{
 
 sample := uint64(10)
 limit := uint64(2)
-res, err := client.SearchMatrixPairs(ctx, &qdrant.SearchMatrixPoints{
+res, err := client.SearchMatrixPairs(context.Background(), &qdrant.SearchMatrixPoints{
     CollectionName: "{collection_name}",
     Sample:         &sample,
     Limit:          &limit,

qdrant-landing/content/documentation/headless/snippets/distance-matrix/basic/generated/java.md

@@ -11,7 +11,7 @@ QdrantClient client =
 
 client
     .searchMatrixPairsAsync(
-        Points.SearchMatrixPoints.newBuilder()
+        SearchMatrixPoints.newBuilder()
             .setCollectionName("{collection_name}")
             .setFilter(Filter.newBuilder().addMust(matchKeyword("color", "red")).build())
             .setSample(10)

qdrant-landing/content/documentation/headless/snippets/distance-matrix/basic/generated/rust.md

@@ -1,6 +1,5 @@
 ```rust
 use qdrant_client::qdrant::{Condition, Filter, SearchMatrixPointsBuilder};
-use qdrant_client::Qdrant;
 
 client
     .search_matrix_pairs(

qdrant-landing/content/documentation/headless/snippets/distance-matrix/offsets-format/generated/go.md

@@ -12,7 +12,7 @@ client, err := qdrant.NewClient(&qdrant.Config{
 
 sample := uint64(10)
 limit := uint64(2)
-res, err := client.SearchMatrixOffsets(ctx, &qdrant.SearchMatrixPoints{
+res, err := client.SearchMatrixOffsets(context.Background(), &qdrant.SearchMatrixPoints{
     CollectionName: "{collection_name}",
     Sample:         &sample,
     Limit:          &limit,

qdrant-landing/content/documentation/headless/snippets/distance-matrix/offsets-format/generated/rust.md

@@ -1,6 +1,5 @@
 ```rust
 use qdrant_client::qdrant::{Condition, Filter, SearchMatrixPointsBuilder};
-use qdrant_client::Qdrant;
 
 client
     .search_matrix_offsets(