Fix #1390

Compile-from-source-in-Linux.md

@@ -12,7 +12,7 @@ The minimal standard required for the C++ compiler is c++14
 
 Be aware that it will try to apply the highest SIMD capabilities available on your CPU i.e. AVX2 > AVX > SSE4 ... So for best results make sure you run the program on the computer on which you compile or you are using the compiled binaries on a computer with similar SIMD capabilities (check the CPU flags with `cat /proc/cpuinfo`). The typical issue encountered when running hardware is not compatible is a SIGILL exception with a message like `Program received signal SIGILL, Illegal instruction`.
 
-It assumes <code>/opt/build</code> is the base for the sources used to build and <code>/opt/installation</code> is the base for the installation directories. It is assumed these directories are owned by your user. Hence assuming the user is <code>$USER</code> in group <code>users</code> you would do the following to create them (once):
+It assumes <code>/opt/build</code> is the base for the sources used to build and <code>/opt/install</code> is the base for the installation directories. It is assumed these directories are owned by your user. Hence assuming the user is <code>$USER</code> in group <code>users</code> you would do the following to create them (once):
 
 <pre><code>sudo mkdir -p /opt/build
 sudo chown $USER:users /opt/build