phaser: fix README

README_PHASER.rst

@@ -28,7 +28,7 @@ The additions and modifications to ARTIQ that were implemented for this project
 * The CORDIC core has been reused from the PDQ2 gateware
   https://github.com/m-labs/pdq2
 * The Migen/MiSoC JESD204B core: https://github.com/enjoy-digital/litejesd204b
-:
+
 
 Installation
 ------------
@@ -38,7 +38,8 @@ Please refer to the manual for more details:
 https://m-labs.hk/artiq/manual-release-2/index.html
 
 * Set up a new conda environment and activate it.
-* Checkout the ARTIQ phaser branch::
+* Checkout the ARTIQ phaser branch: ::
+
     git clone -b phaser https://github.com/m-labs/artiq.git
 
 * Install the standard ARTIQ runtime/install dependencies.
@@ -70,9 +71,11 @@ Setup
   - on JP3 (will force output enable on FXLA108)
 
 * Compile the ARTIQ Phaser bitstream, bios, and runtime (c.f. ARTIQ manual): ::
+
     python -m artiq.gateware.targets.kc705 -H phaser --toolchain vivado
 
 * Run the following OpenOCD commands to flash the ARTIQ transmitter design: ::
+
     init
     jtagspi_init 0 bscan_spi_xc7k325t.bit
     jtagspi_program misoc_phaser_kc705/gateware/top.bin 0x000000