v1.0.0 README tweaks (#61)

## Problem
There's a couple minor things we want to tweak in the `README` before
releasing v1.

## Solution
- Update the `metadataMap` code in the Query by Vector Values example to
the correct syntax.
- Add a few more links to the `Support` section for the community forums
and GitHub issues.

## Type of Change
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] This change requires a documentation update
- [ ] Infrastructure change (CI configs, etc)
- [X] Non-code change (docs, etc)
- [ ] None of the above: (explain here)

## Test Plan
Check out the README.

README.md

@@ -536,7 +536,6 @@ func main() {
 	metadataMap := map[string]interface{}{
 		"genre": "classical",
 	}
-
 	metadata, err := structpb.NewStruct(metadataMap)
 
 	sparseValues := pinecone.SparseValues{
@@ -633,9 +632,18 @@ func main() {
 
 	queryVector := []float32{0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3, 0.3}
 
+	metadataMap := map[string]interface{}{
+		"genre": map[string]interface{}{
+			"$eq": "documentary",
+		},
+		"year": 2019,
+	}
+
 	metadataFilter, err := structpb.NewStruct(map[string]interface{}{
-		"genre": {"$eq": "documentary"},
-		"year":  2019,
+		"genre": map[string]interface{}{
+			"$eq": "documentary",
+		},
+		"year": 2019,
 	})
 	if err != nil {
 		log.Fatalf("Failed to create metadataFilter: %v", err)
@@ -1304,4 +1312,5 @@ func main() {
 
 ## Support
 
-To get help using go-pinecone, reach out to [email protected].
+To get help using go-pinecone you can file an issue on [GitHub](https://github.com/pinecone-io/go-pinecone/issues), visit the [community forum](https://community.pinecone.io/),
+or reach out to [email protected].