Add documentation error issue template

.github/ISSUE_TEMPLATE/documentation_error.md

@@ -0,0 +1,21 @@
+---
+name: Documentation error
+about: Create a report to help us improve
+title: ""
+labels: documentation
+assignees: ""
+---
+
+**Describe the bug**
+A clear and concise description of what the error is.
+
+**Where is located the error**
+
+Link to the documentation page where the error is located.
+
+**Expected content**
+
+What should be the correct content.
+
+**Additional context**
+Add any other context about the problem here.