fix: typos

content/en-US/download/community-mirrors.smd

@@ -76,9 +76,9 @@ Written more precisely, here is the key information and recommend workflow for d
   * Source tarballs, bootstrap tarballs, and binary tarballs are available from all listed mirrors, as well as minisign signatures for all such files.
   * Binary tarballs for recent Zig versions are of the form `zig-x86_64-linux-0.14.1.tar.xz`.
   * If a mirror responds with a HTTP status code other than 200 OK:
-    * `503 Unavilable` may indicate scheduled downtime.
+    * `503 Unavailable` may indicate scheduled downtime.
     * `429 Too Many Requests` may indicate intentional rate-limiting.
-    * `404 Not Found` is a permitted response when requesting Zig releses 0.5.0 or earlier, or Zig development builds earlier than the current latest release.
+    * `404 Not Found` is a permitted response when requesting Zig releases 0.5.0 or earlier, or Zig development builds earlier than the current latest release.
     * Otherwise, feel free to [open an issue](https://github.com/ziglang/www.ziglang.org/issues/new) to inform us of the problem.
 * The Zig Software Foundation can never guarantee the security of any mirror, so every time a tarball is downloaded, it is **essential** to also download the minisign signature (suffix the filename with ".minisig") and verify it against the ZSF's public key (which you should copy from the ziglang.org/download page). **Never skip this step.**
   * If a mirror responds with `200 OK` but signature validation fails on the returned tarball, feel free to [open an

content/en-US/learn/build-system.smd

@@ -16,7 +16,7 @@ layer of abstraction to manage the complexity of building from source.
 
 For example, perhaps one of these situations applies:
 
-- The command line becomes too long and unwieldly, and you want some place to
+- The command line becomes too long and unwieldy, and you want some place to
   write it down.
 - You want to build many things, or the build process contains many steps.
 - You want to take advantage of concurrency and caching to reduce build time.

content/en-US/news/fosdem-2021.smd

@@ -27,7 +27,7 @@ We're interested in all kinds of talks about Zig, of course! If you want to make
 
 All submissions must be made through [FOSDEM's pentabarf website](https://penta.fosdem.org/). Make sure to select the "Zig Programming Language Devroom" when submitting. 
 
-**You must also make sure to be able to fullfill all requirements to be able to present, as listed in the next section.** [Here you can sign up](https://penta.fosdem.org/user/new_account).
+**You must also make sure to be able to fulfill all requirements to be able to present, as listed in the next section.** [Here you can sign up](https://penta.fosdem.org/user/new_account).
 
 ### Prerequisites & Talk details