Update supported fedora releases (#1560)

Author: kasicka

locale/en/download/package-manager.md

@@ -199,7 +199,7 @@ In a hurry for the latest updates?  [Grab them from epel-testing.](https://fedor
 **Supported Red Hat® Enterprise Linux® versions:**
 
 * **RHEL 6** (i686/x86_64)
-* **RHEL 7** (x86_64)
+* **RHEL 7** (aarch64/x86_64)
 
 RHEL 6 is no longer supported through EPEL, you can however use [Red Hat Software Collections](https://www.softwarecollections.org/en/scls/?search=nodejs).
 
@@ -208,9 +208,8 @@ Additionally, versions of **CentOS** and **Scientific Linux** corresponding to t
 **Supported Fedora versions:**
 
 * **Fedora Rawhide** (i686/x86_64/armv7hl/aarch64/ppc64/ppc64le/s390x)
+* **Fedora 27** (i686/x86_64/armv7hl/aarch64/ppc64/ppc64le/s390x)
 * **Fedora 26** (i686/x86_64/armv7hl/aarch64/ppc64/ppc64le)
-* **Fedora 25** (i686/x86_64/armv7hl)
-* **Fedora 24** (i686/x86_64/armv7hl)
 
 
 ## FreeBSD and OpenBSD