TensorFlow: Upstreaming changes to git.

Changes:
Fix anchor for github.

Base CL: 107352236

tensorflow/g3doc/get_started/os_setup.md

@@ -9,9 +9,10 @@ The TensorFlow Python API requires Python 2.7.
 The simplest way to install TensorFlow is using
 [pip](https://pypi.python.org/pypi/pip) for both Linux and Mac.
 
-If you encounter installation errors, see [common problems](#common_problems)
-for some solutions. To simplify installation, please consider using our
-virtualenv-based instructions [here](#virtualenv_install).
+If you encounter installation errors, see
+[common problems](#common_install_problems) for some solutions. To simplify
+installation, please consider using our virtualenv-based instructions
+[here](#virtualenv_install).
 
 ### Ubuntu/Linux <a class="md-anchor" id="AUTOGENERATED-ubuntu-linux"></a>
 
@@ -326,7 +327,7 @@ $  # Your prompt should change back
 ```
 
 
-## Common Problems <a class="md-anchor" id="AUTOGENERATED-common-problems"></a>
+## Common Problems <a class="md-anchor" id="common_install_problems"></a>
 
 ### GPU-related issues <a class="md-anchor" id="AUTOGENERATED-gpu-related-issues"></a>