MINOR: Fix typo on community.md (#381)

Enivronments -> Environments
diff --git a/community.md b/community.md
index f1a5078..a61d6bf 100644
--- a/community.md
+++ b/community.md
@@ -55,7 +55,7 @@
 When emailing one of the lists, please prefix the subject line with one or more
 tags. Depending the topic of your email, tags may include one or more:
 
-- Supported Enivronments: e.g., `[C++]`, `[Java]`, `[Python]`, etc.
+- Supported Environments: e.g., `[C++]`, `[Java]`, `[Python]`, etc.
 - Specifications and Protocols: e.g., `[Format]`, `[Flight RPC]`, `[ADBC]`, etc.
 
 You may also prefix your subject line with `[DISCUSS]` if your email is intended