fix errors in toc links

dlp240/README.md

@@ -16,10 +16,10 @@ Several chapters are covered.
    * [The "purge" step, a.k.a. singleton and "clique" removal.](#the-purge-step-aka-singleton-and-clique-removal)
    * [The "merge" step](#the-merge-step)
    * [The "replay" step](#the-replay-step)
-   * [Computing the right-hand side.](#computing-the-righthand-side)
+   * [Computing the right-hand side.](#computing-the-right-hand-side)
  * [Estimating linear algebra time more precisely, and choosing parameters](#estimating-linear-algebra-time-more-precisely-and-choosing-parameters)
  * [Reproducing the linear algebra results](#reproducing-the-linear-algebra-results)
- * [Back-substituting the linear algebra result in collected relations](#backsubstituting-the-linear-algebra-result-in-collected-relations)
+ * [Back-substituting the linear algebra result in collected relations](#back-substituting-the-linear-algebra-result-in-collected-relations)
  * [Reproducing the individual logarithm result](#reproducing-the-individual-logarithm-result)
 
 ## Software prerequisites, and reference hardware configuration