Update README.md

Author: lemire

README.md

@@ -4,7 +4,7 @@ Bloom filters
 [![Go Report Card](https://goreportcard.com/badge/github.com/bits-and-blooms/bloom)](https://goreportcard.com/report/github.com/bits-and-blooms/bloom)
 [![Go Reference](https://pkg.go.dev/badge/github.com/bits-and-blooms/bloom.svg)](https://pkg.go.dev/github.com/bits-and-blooms/bloom/v3)
 
-This library is used by popular systems such as [Milvus](https://github.com/milvus-io/milvus) and [beego](https://github.com/beego/beego).
+This library is used by popular systems such as [Milvus](https://github.com/milvus-io/milvus) and [beego](https://github.com/beego/Beego).
 
 A Bloom filter is a concise/compressed representation of a set, where the main
 requirement is to make membership queries; _i.e._, whether an item is a