Update sources/modules/compilation-model/separate-compilation.md

Co-authored-by: Florian Sattler <[email protected]>

Author: VictorEijkhout

sources/modules/compilation-model/separate-compilation.md

@@ -79,7 +79,7 @@ implementation-defined, unspecified, or undefined behavior._
 
 A student should be able to:
 
-1. Use compile flags, including `-I` and `-L` search path flags.
+1. Use compile flags, including `-I` and `-L` to specify search paths.
 2. Make header files for their own code, including using header guards.
 3. Use include directives for the headers of external libraries.
 5. Be able to declare `extern` variables.