Certification indentation

Author: mcmchris

content/hardware/03.nano/boards/nano-r4/datasheet/datasheet.md

@@ -289,9 +289,9 @@ Connectors of the Nano R4 are place on the top side of the board, their placemen
 The Nano R4 was designed to be usable as a surface-mount module and presents a dual inline package (DIP) format with the Nano-styled header connectors on a 2.54 mm pitch grid with 1 mm holes.
 </p>
 
-# Certifications
+## Certifications
 
-## Certificactions Summary
+### Certificactions Summary
 
 |  **Certification**  | **Status** |
 | :-----------------: | :--------: |
@@ -304,11 +304,11 @@ The Nano R4 was designed to be usable as a surface-mount module and presents a d
 |      UKCA (UK)      |    Yes     |
 |   RCM (Australia)   |    Yes     |
 
-## Declaration of Conformity CE DoC (EU)
+### Declaration of Conformity CE DoC (EU)
 
 We declare under our sole responsibility that the products above are in conformity with the essential requirements of the following EU Directives and therefore qualify for free movement within markets comprising the European Union (EU) and European Economic Area (EEA).
 
-## Declaration of Conformity to EU RoHS & REACH 211 01/19/2021
+### Declaration of Conformity to EU RoHS & REACH 211 01/19/2021
 
 Arduino boards are in compliance with RoHS 2 Directive 2011/65/EU of the European Parliament and RoHS 3 Directive 2015/863/EU of the Council of 4 June 2015 on the restriction of the use of certain hazardous substances in electrical and electronic equipment.
 
@@ -329,11 +329,11 @@ Exemptions : No exemptions are claimed.
 
 Arduino Boards are fully compliant with the related requirements of European Union Regulation (EC) 1907 /2006 concerning the Registration, Evaluation, Authorization and Restriction of Chemicals (REACH). We declare none of the SVHCs ([https://echa.europa.eu/web/guest/candidate-list-table](https://echa.europa.eu/web/guest/candidate-list-table)), the Candidate List of Substances of Very High Concern for authorization currently released by ECHA, is present in all products (and also package) in quantities totaling in a concentration equal or above 0.1%. To the best of our knowledge, we also declare that our products do not contain any of the substances listed on the "Authorization List" (Annex XIV of the REACH regulations) and Substances of Very High Concern (SVHC) in any significant amounts as specified by the Annex XVII of Candidate list published by ECHA (European Chemical Agency) 1907 /2006/EC.
 
-## Conflict Minerals Declaration
+### Conflict Minerals Declaration
 
 As a global supplier of electronic and electrical components, Arduino is aware of our obligations with regards to laws and regulations regarding Conflict Minerals, specifically the Dodd-Frank Wall Street Reform and Consumer Protection Act, Section 1502. Arduino does not directly source or process conflict minerals such as Tin, Tantalum, Tungsten, or Gold. Conflict minerals are contained in our products in the form of solder, or as a component in metal alloys. As part of our reasonable due diligence Arduino has contacted component suppliers within our supply chain to verify their continued compliance with the regulations. Based on the information received thus far we declare that our products contain Conflict Minerals sourced from conflict-free areas.
 
-## FCC Caution
+### FCC Caution
 
 Any Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.