Final documentation fixes

Signed-off-by: Maciej Kurc <mkurc@antmicro.com>
diff --git a/tests/dsp/dsp_inout_registered_dualclk/README.rst b/tests/dsp/dsp_inout_registered_dualclk/README.rst
index e50e497..f0f8029 100644
--- a/tests/dsp/dsp_inout_registered_dualclk/README.rst
+++ b/tests/dsp/dsp_inout_registered_dualclk/README.rst
@@ -1,4 +1,3 @@
-
 DSP-style block with inputs and outputs registered using separate clocks
 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 
diff --git a/tests/gates/README.rst b/tests/gates/README.rst
index 85c8997..8a3b79e 100644
--- a/tests/gates/README.rst
+++ b/tests/gates/README.rst
@@ -1,9 +1,9 @@
 .. Gates
 
-These are some gates
-====================
+Basic logic gates
+=================
 
-The following shows some examples taken from the tests
+These are some basic logic gates. NOT, AND and NOR are modeled as primitives while XOR is made up of 5 NOR gates.
 
 .. toctree::
    not/README.rst
diff --git a/tests/vtr/full-adder/README.rst b/tests/vtr/full-adder/README.rst
index 7f14b68..e9d7000 100644
--- a/tests/vtr/full-adder/README.rst
+++ b/tests/vtr/full-adder/README.rst
@@ -1,10 +1,10 @@
 Full Adder Example
 ++++++++++++++++++
 
-An example of the classical combinational `"full adder" <https://en.wikipedia.org/wiki/Adder_(electronics)#Full_adder>`_ circuit shown in |fig59|_.
+An example of the classical combinational `"full adder" <https://en.wikipedia.org/wiki/Adder_(electronics)#Full_adder>`_ circuit shown in |fig60|_ of the `"Combinational block" <https://docs.verilogtorouting.org/en/latest/tutorials/arch/timing_modeling/#combinational-block>`_ section in the Primitive Block Timing Modeling Tutorial of the Verilog to Routing documentation and reproduced below.
 
-.. |fig59| replace:: ``Figure 59 - Full Adder``
-.. _fig59: https://docs.verilogtorouting.org/en/latest/tutorials/arch/timing_modeling/#combinational-block
+.. |fig60| replace:: ``Figure 60 - Full Adder``
+.. _fig60: https://docs.verilogtorouting.org/en/latest/tutorials/arch/timing_modeling/#combinational-block
 
 .. image:: full-adder.svg
    :alt: Figure 59 from Verilog to Routing Documentation
diff --git a/tests/vtr/lutff-pair/README.rst b/tests/vtr/lutff-pair/README.rst
index 6454c41..0c1961f 100644
--- a/tests/vtr/lutff-pair/README.rst
+++ b/tests/vtr/lutff-pair/README.rst
@@ -1,7 +1,7 @@
 LUT with FlipFlop Example
 +++++++++++++++++++++++++
 
-An example of the classical LUT with FlipFlop pair shown in |fig31|_ demonstrating the `<pack_pattern>` tag.
+An example of the classical LUT with FlipFlop pair shown in |fig31|_ of the `"Architecture Reference" <https://docs.verilogtorouting.org/en/latest/arch/reference/#architecture-reference>`_ section of the Verilog to Routing Documentation demonstrating the `<pack_pattern>` tag.
 
 .. |fig31| replace:: ``Figure 31 - Pack Pattern Example``
 .. _fig31: https://docs.verilogtorouting.org/en/latest/arch/reference/#id35