typo: monomorph docs

Author: davidrusu

src/backend/monomorph.md

@@ -61,7 +61,7 @@ units](../appendix/glossary.md#codegen-unit).
 
 For better incremental build times, the CGU partitioner creates two CGU for each source level
 modules. One is for "stable" i.e. non-generic code and the other is more volatile code i.e.
-monoporphized/specialized instances.
+monomorphized/specialized instances.
 
 For depenencies, consider Crate A and Crate B, such that Crate B depends on Crate A.
 The following table lists different scenarios for a function in Crate A that might be used by one