docs: Add space after CMake -D option

diff --git a/doc/INSTALL.md b/doc/INSTALL.md
index 67d6e5061d0b4fba1bf5e9f3a5ab205f0f9b6d5f..fb3fdcd308c175a9e11f879cba2b789e76f4c2d4 100644 (file)
--- a/doc/INSTALL.md
+++ b/doc/INSTALL.md
@@ -41,7 +41,7 @@ should be located or retrieved:
 
 - [BLAKE3](https://github.com/BLAKE3-team/BLAKE3)[^1]
 - [cpp-httplib](https://github.com/yhirose/cpp-httplib)[^1] (optional, disable
-  with `-DHTTP_STORAGE_BACKEND=OFF`)
+  with `-D HTTP_STORAGE_BACKEND=OFF`)
 - [doctest](https://github.com/doctest/doctest)[^2] (optional, disable with `-D
   ENABLE_TESTING=OFF`)
 - [fmt](https://fmt.dev)[^1]