architecture: rename files to dashes instead of underscores

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I2a29242abb5b900a22e081c796f8a44273fd543f
diff --git a/architecture/user_management.md b/architecture/user-management.md
similarity index 100%
rename from architecture/user_management.md
rename to architecture/user-management.md
diff --git a/features.md b/features.md
index ad03699..4241d18 100644
--- a/features.md
+++ b/features.md
@@ -61,7 +61,7 @@
 [Phosphor inventory manager]: https://github.com/openbmc/phosphor-inventory-manager/blob/master/README.md
 [Phosphor Logging]: https://github.com/openbmc/phosphor-logging/blob/master/README.md
 [Phosphor REST APIs]: https://github.com/openbmc/docs/blob/master/rest-api.md
-[Phosphor User Management]: https://github.com/openbmc/docs/blob/master/architecture/user_management.md
+[Phosphor User Management]: https://github.com/openbmc/docs/blob/master/architecture/user-management.md
 [Phosphor Watchdog Implementation]: https://github.com/openbmc/phosphor-watchdog
 [Phosphor WebUI]: https://github.com/openbmc/phosphor-webui/blob/master/README.md
 [Power OCC Implementation]: https://github.com/openbmc/openpower-occ-control
diff --git a/security/network-security-considerations.md b/security/network-security-considerations.md
index f89621a..3ad11b0 100644
--- a/security/network-security-considerations.md
+++ b/security/network-security-considerations.md
@@ -77,7 +77,7 @@
 authentication and authorization functions and ties into IPMI, Linux
 PAM, LDAP, and logging.  Some of OpenBMC services use phosphor-user-manager.
 
-[phosphor-user-manager]: https://github.com/openbmc/docs/blob/master/architecture/user_management.md
+[phosphor-user-manager]: https://github.com/openbmc/docs/blob/master/architecture/user-management.md
 
 Transport layer security (TLS) protocols are configured for each
 service at compile time, become part of the image, and cannot be