Fix wording of pack format overview

docs/reference/pack-format/index.md

@@ -4,11 +4,11 @@ The packwiz CLI uses a custom format to store metadata about files contained in
 
 - [`pack.toml`](pack-toml.md) stores metadata about the modpack itself, including Minecraft and mod loader versions
 - [`index.toml`](index-toml.md) stores a list of files in the modpack, with hashes to determine when files have been changed
-- [`external.pw.toml`](mod-toml.md) references files that are to be downloaded from an external support, with optional and side-only filtering, including metadata to allow these links to be updated
+- [`external.pw.toml`](mod-toml.md) references files to download from an external server, with optional and side-only filtering, including metadata to allow these links to be updated
 	- Any filename is allowed for these metadata files; `metafile = true` in the index indicates which files are external
 	- The extension `.pw.toml` is recommended to allow `metafile = true` to be automatically set by the CLI (and may be required in a future version of the format)
 
-`pack.toml` and `index.toml` are typically stored in the root directory of the modpack; external references can be placed in any directory, but they are typically used for mods and resource packs.
+`pack.toml` and `index.toml` are typically stored in the root directory of the modpack; external references can be placed in any directory, but are typically used for mods and resource packs.
 
 [Example Pack :octicons-link-external-16:](https://github.com/packwiz/packwiz-example-pack){ .md-button .md-button--primary target="_blank" }