Update UHD to v4.5

Compile-from-source-in-Linux.md

@@ -265,11 +265,12 @@ Prerequisites:
 </code></pre>
 <pre><code>cd /opt/build
 git clone https://github.com/EttusResearch/uhd.git
-git reset --hard v4.3.0.0
-cd uhd/host
+cd uhd
+git reset --hard v4.5.0.0
+cd host
 mkdir build
 cd build
-cmake -DCMAKE_INSTALL_PREFIX=/opt/install/uhd ../
+cmake -DCMAKE_INSTALL_PREFIX=/opt/install/uhd ..
 make -j $(nproc)
 make install
 /opt/install/uhd/lib/uhd/utils/uhd_images_downloader.py