Update docs for ALLOW_UNIMPLEMENTED_SYSCALLS. NFC (#26479)

Author: sbc100

site/source/docs/tools_reference/settings_reference.rst

@@ -3217,9 +3217,9 @@ Default value: true
 ALLOW_UNIMPLEMENTED_SYSCALLS
 ============================
 
-Include unimplemented JS syscalls to be included in the final output.  This
-allows programs that depend on these syscalls at runtime to be compiled, even
-though these syscalls will fail (or do nothing) at runtime.
+Link against stub implementations of unsupported/unimplemented syscalls. This
+allows programs that depend on these syscalls to be compiled, even though
+these functions will fail (or do nothing) at runtime.
 
 Default value: true
 

src/settings.js

@@ -2119,9 +2119,10 @@ var SPLIT_MODULE = false;
 // on startup, before loading the main module.
 var AUTOLOAD_DYLIBS = true;
 
-// Include unimplemented JS syscalls to be included in the final output.  This
-// allows programs that depend on these syscalls at runtime to be compiled, even
-// though these syscalls will fail (or do nothing) at runtime.
+// Link against stub implementations of unsupported/unimplemented syscalls. This
+// allows programs that depend on these syscalls to be compiled, even though
+// these functions will fail (or do nothing) at runtime.
+// [link]
 var ALLOW_UNIMPLEMENTED_SYSCALLS = true;
 
 // Allow calls to Worker(...) and importScripts(...) to be Trusted Types