docs: fix sphinx nits

Author: vk2seb

gateware/docs/examples/soc_examples.rst

@@ -11,21 +11,21 @@ polysyn
 .. automodule:: top.polysyn.top
 
 xbeam
-^^^^^^^
+^^^^^
 .. automodule:: top.xbeam.top
 
 macro_osc
-^^^^^^^
+^^^^^^^^^
 .. automodule:: top.macro_osc.top
 
 sid
-^^^^^^^
+^^^
 .. automodule:: top.sid.top
 
 selftest
-^^^^^^^
+^^^^^^^^
 .. automodule:: top.selftest.top
 
 bootloader
-^^^^^^^
+^^^^^^^^^^
 .. automodule:: top.bootloader.top

gateware/docs/hardware_changes.rst

@@ -13,7 +13,7 @@ First production hardware release.
     - **eurorack-pmod R3.3** audio interface.
 
 R4 changes (compared to R3)
-^^^^^^^^^^^^^^^^^^^
+^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
     - Add external PLL SI5351 and route 2x clocks to ECP5 (useful for EMC as it supports spread-spectrum, also for runtime clock/resolution switching).
     - Add series 27R/33R on all FFC lines to reduce radiated emissions.

gateware/docs/hardware_design.rst

@@ -8,7 +8,7 @@ Block Diagram (Tiliqua R4)
 
 Below is high-level picture of how all the different electrical components of Tiliqua are connected.
 
-.. image:: _static/tiliqua-block-diagram.svg
+.. image:: /_static/tiliqua_block_diagram.svg
   :width: 800
 
 Some connections are omitted for simplicity (example: some ex0/ex1 pins are connected to both the ECP5 and RP2040, not shown).
@@ -41,7 +41,7 @@ Tiliqua Motherboard
 - Soft mute for pop-free bitstream switching
 
 FPGA SoM (`soldiercrab`)
----------------------------------
+------------------------
 
 **Repository:** `soldiercrab <https://github.com/apfaudio/soldiercrab>`_ (see README there for more detailed docs on this SoM)