language_elements.md: lint with mdl

Linting with markdownlint (version 0.13.0) as packaged by Debian
Linux[1] except for any kind of links, tables and checks on
snippets of Fortran.

[1] https://tracker.debian.org/pkg/ruby-mdl

Signed-off-by: Norwid Behrnd <[email protected]>

Author: nbehrnd

data/learning.yml

@@ -286,6 +286,21 @@ books:
       - /learn/oop_features_in_fortran/object_oriented_programming_techniques
       - /learn/oop_features_in_fortran/performance_and_ease_of_use
 
+  - title: Fortran 95 language features
+    description: Wikipedia's article about the Fortran 95 standard
+    category: Fortran Documentation
+    link: /learn/f95_features
+    pages:
+      - /learn/f95_features/
+      - /learn/f95_features/language_elments
+      - /learn/f95_features/expressions_and_assignments
+      - /learn/f95_features/control_statements
+      - /learn/f95_features/programm_units_and_procedures
+      - /learn/f95_features/array_handling
+      - /learn/f95_features/pointers
+      - /learn/f95_features/intrinsic_procedures
+      - /learn/f95_features/data_transfer
+
 # Web links listed at the bottom of the 'Learn' landing page
 #
 reference-links: