Rename "Howtos"

Author: goerz

docs/make.jl

@@ -91,7 +91,7 @@ makedocs(;
         "Dynamical Generators" => "generators.md",
         "Propagation Methods" => "methods.md",
         "Expectation Values" => "storage.md",
-        "Howtos" => "howto.md",
+        "How-to Guides" => "howto.md",
         hide("Benchmarks" => "benchmarks.md", [joinpath("benchmarks", "profiling.md")]),
         "API" => "api/quantumpropagators.md",
         "References" => "references.md",

docs/src/howto.md

@@ -1,4 +1,4 @@
-# Howtos
+# [How-to Guides](@id howto)
 
 ```math
 \gdef\op#1{\hat{#1}}
@@ -7,6 +7,8 @@
 \gdef\Im{\operatorname{Im}}
 ```
 
+**Contents**
+
 ```@contents
 Pages=[
  "howto.md"