[doc] update doc generation

Signed-off-by: Timothy Chen <timothytim@google.com>

[keymgr, doc] fix typos

Signed-off-by: Timothy Chen <timothytim@google.com>
diff --git a/util/build_docs.py b/util/build_docs.py
index 4ec20d3..fffadcc 100755
--- a/util/build_docs.py
+++ b/util/build_docs.py
@@ -55,6 +55,7 @@
         "hw/ip/gpio/data/gpio.hjson",
         "hw/ip/hmac/data/hmac.hjson",
         "hw/ip/i2c/data/i2c.hjson",
+        "hw/ip/keymgr/data/keymgr.hjson",
         "hw/ip/nmi_gen/data/nmi_gen.hjson",
         "hw/ip/otbn/data/otbn.hjson",
         "hw/ip/otp_ctrl/data/otp_ctrl.hjson",
@@ -83,6 +84,7 @@
         "hw/ip/gpio/data/gpio_testplan.hjson",
         "hw/ip/hmac/data/hmac_testplan.hjson",
         "hw/ip/i2c/data/i2c_testplan.hjson",
+        "hw/ip/keymgr/data/keymgr_testplan.hjson",
         "hw/ip/padctrl/data/padctrl_fpv_testplan.hjson",
         "hw/ip/pinmux/data/pinmux_fpv_testplan.hjson",
         "hw/ip/rv_plic/data/rv_plic_fpv_testplan.hjson",