update functional simulator pages

* the external links have changed url, so we are updating them

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

content/resources/ibmpower10functionalsimulator.md

@@ -1,6 +1,6 @@
 ---
 title: IBM POWER10 Functional Simulator
-link: https://www14.software.ibm.com/webapp/set2/sas/f/pwrfs/pwr10/home.html
+link: https://www.ibm.com/support/pages/node/6491145
 tags:
   - power10
   - simulator

content/resources/ibmpower8functionalsimulator.md

@@ -1,6 +1,6 @@
 ---
 title: IBM POWER8 Functional Simulator
-link: https://www14.software.ibm.com/webapp/set2/sas/f/pwrfs/home.html
+link: https://www.ibm.com/support/pages/node/6491151
 tags:
   - power8
   - simulator

content/resources/ibmpower9functionalsimulator.md

@@ -1,13 +1,13 @@
 ---
 title: IBM POWER9 Functional Simulator
-link: https://www14.software.ibm.com/webapp/set2/sas/f/pwrfs/pwr9/home.html
+link: https://www.ibm.com/support/pages/node/6491149
 tags:
   - power9
   - simulator
   - cpu
   - processor
   - isa
-date: 2022-01-09
+date: 2022-09-22
 draft: false
 ---