Add a period

Co-authored-by: Alexander Groleau <alex@proof.construction>

1 files changed, 1 insertions, 1 deletions

diff --git a/doc/build-helpers/trivial-build-helpers.chapter.md b/doc/build-helpers/trivial-build-helpers.chapter.md
index d90fee192b258..8a1fd61c18c80 100644
--- a/doc/build-helpers/trivial-build-helpers.chapter.md
+++ b/doc/build-helpers/trivial-build-helpers.chapter.md
@@ -69,7 +69,7 @@ These are useful for creating files from Nix expressions, which may be scripts o
 Each of these functions will cause a derivation to be produced.  When you coerce the result of each of these functions to a string, it will evaluate to the *store path* of this derivation.
 
 :::: {.warning}
-Some of these functions will put the resulting files within a directory inside the derivation output.  If you need to refer to the resulting files somewhere else in Nix code, remember to append the path to the file  For example:
+Some of these functions will put the resulting files within a directory inside the derivation output.  If you need to refer to the resulting files somewhere else in Nix code, remember to append the path to the file. For example:
 
 
 If the derivation destination is a directory...