A few minor clarifications on running examples (modified to include textual instructions)

Signed-off-by: Joshua Fife <jpfife17@gmail.com>

docs/building-examples.rst

@@ -57,7 +57,7 @@ Enter the directory that contains examples for Xilinx 7-Series FPGAs:
 .. code-block:: bash
    :name: enter-dir-xc7
 
-   cd symbiflow-examples/xc7
+   cd xc7
 
 .. jinja:: xc7_counter_test
    :file: templates/example.jinja

xc7/linux_litex_demo/README.rst

@@ -19,14 +19,7 @@ run the following commands:
    ./digilent_arty.py --toolchain symbiflow --cpu-type vexriscv --build
    cd -
 
-To build the linux-litex-demo example, first re-navigate to the directory that contains examples for Xilinx 7-Series FPGAs:
-
-.. code-block:: bash
-   :name: enter-dir-xc7
-   
-   cd symbiflow-examples/xc7
-
-Then depending on your hardware, run:
+To build the linux-litex-demo example, first re-navigate to the directory that contains examples for Xilinx 7-Series FPGAs. Then depending on your hardware, run:
 
 .. code-block:: bash
    :name: example-litex-a35t-group

xc7/picosoc_demo/README.rst

@@ -2,15 +2,7 @@ PicoSoC demo
 ~~~~~~~~~~~~
 
 This example features a picorv32 soft CPU and a SoC based on it. To build the
-picosoc example, first navigate to the directory that contains examples for Xilinx 7-Series FPGAs:
-
-.. code-block:: bash
-   :name: enter-dir-xc7
-   
-   cd symbiflow-examples/xc7
-   
-
-Then run the following commands:
+picosoc example, first navigate to the directory that contains examples for Xilinx 7-Series FPGAs. Then run the following commands:
 
 .. code-block:: bash
    :name: example-picosoc-a35t-group