fix typo (coder#719)

ericpaulsen · web-flow · commit 18b900e46c94 · 2021-11-23T09:57:28.000-06:00
diff --git a/admin/workspace-management/self-contained-builds.md b/admin/workspace-management/self-contained-builds.md
@@ -12,7 +12,7 @@ However, Coder offers the option of using **self-contained workspace builds**.
 Enabling this option changes the Coder deployment so that workspaces control the
 boot sequence internally, with the workspace downloading assets from `coderd`.
 
-> At this time, Coder does not support certificate injectioin with
+> At this time, Coder does not support certificate injection with
 > self-contained workspace builds.
 
 To enable self-contained workspace builds:
