Use stricter formatting (algorithm-archivists#993)

SUMMARY.md

@@ -20,7 +20,7 @@
         * [Multiplication as a Convolution](contents/convolutions/multiplication/multiplication.md)
         * [Convolutions of Images (2D)](contents/convolutions/2d/2d.md)
         * [Convolutional Theorem](contents/convolutions/convolutional_theorem/convolutional_theorem.md)
-    * [Probability Distributions](contents/probability_distributions/distributions.md)	
+    * [Probability Distributions](contents/probability_distributions/distributions.md)
 * [Tree Traversal](contents/tree_traversal/tree_traversal.md)
 * [Euclidean Algorithm](contents/euclidean_algorithm/euclidean_algorithm.md)
 * [Monte Carlo](contents/monte_carlo_integration/monte_carlo_integration.md)
@@ -46,4 +46,4 @@
 * [Quantum Information](contents/quantum_information/quantum_information.md)
 * [Cryptography](contents/cryptography/cryptography.md)
 * [Computus](contents/computus/computus.md)
-* [Approximate Counting Algorithm](contents/approximate_counting/approximate_counting.md)
+* [Approximate Counting Algorithm](contents/approximate_counting/approximate_counting.md)