fixed environment-variables description

Author: rotarur

docs/environment-variables.md

@@ -86,11 +86,11 @@ those.
   may use (in bytes, defaults to 256MB).
 - `GRAPH_MAX_IPFS_CACHE_SIZE`: maximum number of files cached (defaults to 50).
 - `GRAPH_MAX_IPFS_CACHE_FILE_SIZE`: maximum size of each cached file (in bytes, defaults to 1MiB).
-- `GRAPH_IPFS_REQUEST_LIMIT`: Limits the number of requests per second to IPFS for file data sources.
-- `GRAPH_IPFS_MAX_ATTEMPTS`: Safety mechanism to prevent infinite spamming
-  of IPFS servers in the event of logical or unhandled deterministic
-  error (default: 100 000)
-  Defaults to 100.
+- `GRAPH_IPFS_REQUEST_LIMIT`: Limits the number of requests per second to IPFS for file data sources. Defaults to 100.
+- `GRAPH_IPFS_MAX_ATTEMPTS`: This limits the IPFS retry requests in case of a
+  file not found or logical issue working as a safety mechanism to
+  prevent infinite spamming of IPFS servers and network congestion
+  (default: 100 000).
 
 ## GraphQL