[PATCH v3] docs/specs/riscv-iommu: Fixed broken link to external risv iommu document

["hemanshu.khilari.foss" <hemanshu.khilari.foss@gmail.com>]

The links to riscv iommu specification document are incorrect. This patch
updates all the said link to point to correct location.

Cc: qemu-riscv@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2808
Signed-off-by: hemanshu.khilari.foss <hemanshu.khilari.foss@gmail.com>
---
 docs/specs/riscv-iommu.rst | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/docs/specs/riscv-iommu.rst b/docs/specs/riscv-iommu.rst
index 000c7e1f57..991d376fdc 100644
--- a/docs/specs/riscv-iommu.rst
+++ b/docs/specs/riscv-iommu.rst
@@ -4,7 +4,7 @@ RISC-V IOMMU support for RISC-V machines
 ========================================
 
 QEMU implements a RISC-V IOMMU emulation based on the RISC-V IOMMU spec
-version 1.0 `iommu1.0`_.
+version 1.0 `iommu1.0.0`_.
 
 The emulation includes a PCI reference device (riscv-iommu-pci) and a platform
 bus device (riscv-iommu-sys) that QEMU RISC-V boards can use.  The 'virt'
@@ -14,7 +14,7 @@ riscv-iommu-pci reference device
 --------------------------------
 
 This device implements the RISC-V IOMMU emulation as recommended by the section
-"Integrating an IOMMU as a PCIe device" of `iommu1.0`_: a PCI device with base
+"Integrating an IOMMU as a PCIe device" of `iommu1.0.0`_: a PCI device with base
 class 08h, sub-class 06h and programming interface 00h.
 
 As a reference device it doesn't implement anything outside of the specification,
@@ -109,7 +109,7 @@ riscv-iommu options:
 - "s-stage": enabled
 - "g-stage": enabled
 
-.. _iommu1.0: https://github.com/riscv-non-isa/riscv-iommu/releases/download/v1.0/riscv-iommu.pdf
+.. _iommu1.0.0: https://github.com/riscv-non-isa/riscv-iommu/releases/download/v1.0.0/riscv-iommu.pdf
 
 .. _linux-v8: https://lore.kernel.org/linux-riscv/cover.1718388908.git.tjeznach@rivosinc.com/
 
-- 
2.42.0